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Analysis of thermoelectric coupling under parallel mismatch in triple-junction GaAs solar cells for satellites 卫星用三重结砷化镓太阳能电池平行失配下的热电耦合分析
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-10-04 DOI: 10.1016/j.solmat.2024.113197
Xinyue Cao , Wenqi Zhao , Depeng Jiang , Zhen Zhang , Ming Liu , Lei Wang , Zheng Wang , Jie Fan , Kaixin Shi
{"title":"Analysis of thermoelectric coupling under parallel mismatch in triple-junction GaAs solar cells for satellites","authors":"Xinyue Cao ,&nbsp;Wenqi Zhao ,&nbsp;Depeng Jiang ,&nbsp;Zhen Zhang ,&nbsp;Ming Liu ,&nbsp;Lei Wang ,&nbsp;Zheng Wang ,&nbsp;Jie Fan ,&nbsp;Kaixin Shi","doi":"10.1016/j.solmat.2024.113197","DOIUrl":"10.1016/j.solmat.2024.113197","url":null,"abstract":"<div><div>Triple-junction gallium arsenide (GaAs) solar cells used in satellites can experience decreased reliability due to parallel mismatch during operation. This study presents a thermoelectric coupling model to calculate the temperature changes induced by parallel mismatch. The model's accuracy is verified using solar cell temperature data from space thermal environments and positive bias experimental conditions. The results indicate that when reverse current flows non-uniformly into the cell due to parallel mismatch, the temperature is higher compared to uniform current flow. The maximum relative error between the theoretically calculated temperature and the experimental result is 4.8 %. In space conditions, the on-orbit temperature data of the satellite solar cells during normal operation show a relative error of 5.69 %. When operating in space under 300 km orbital conditions, the cell temperature reaches 279 °C at a forward bias of 3.5 V with uniformly distributed reverse current, and 551 °C with non-uniformly distributed reverse current. With reasonable assumptions about local heat sources, the cell temperature can exceed 1000 °C under a current of 1.5 A, potentially causing permanent damage to the solar cell.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113197"},"PeriodicalIF":6.3,"publicationDate":"2024-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Extraordinarily fast response all-solid-state electrochromic devices 超快响应全固态电致变色器件
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-10-03 DOI: 10.1016/j.solmat.2024.113193
Kunrun Song , Zhenhu Cao , Shichen Weng , Wentao Chen , Ran Jiang , Alexandr Alexandrovich Rogachev , Maxim Anatolievich Yarmolenko , Jumei Zhou , Hongliang Zhang
{"title":"Extraordinarily fast response all-solid-state electrochromic devices","authors":"Kunrun Song ,&nbsp;Zhenhu Cao ,&nbsp;Shichen Weng ,&nbsp;Wentao Chen ,&nbsp;Ran Jiang ,&nbsp;Alexandr Alexandrovich Rogachev ,&nbsp;Maxim Anatolievich Yarmolenko ,&nbsp;Jumei Zhou ,&nbsp;Hongliang Zhang","doi":"10.1016/j.solmat.2024.113193","DOIUrl":"10.1016/j.solmat.2024.113193","url":null,"abstract":"<div><div>Gel polymer electrolytes have been acknowledged as a promising candidate within the realm of electrochromic devices (ECDs) for addressing the safety concerns of liquid electrolytes and overcoming the poor ionic conductivity inherent in solid electrolytes. Herein, a novel strategy for the simple fabrication of <em>in-situ</em> UV-curable gel polymer electrolytes has been proposed to enhance ionic conductivity and promote interface interactions, thereby facilitating remarkably fast response times. After rapid photopolymerization, the electrolyte containing 10 wt% trimethylolpropane ethoxylate triacrylate exhibits the highest ionic conductivity (1.42 mS cm<sup>−1</sup>), which is raised to a value of 1.79 mS cm<sup>−1</sup> by the incorporation of alumina inorganic nanoparticles. Additionally, the polymer electrolyte demonstrates high optical transmittance, relatively notable interface adhesive strength (26 KPa), and outstanding thermal stability, with only a 5 % weight loss observed up to 126 °C. These distinctive characteristics enable the fabrication of all-solid-state WO<sub>3</sub>-NiO ECDs characterized by large optical modulation (50.82 %), super-short switching times (0.8 s for bleaching and 4.0 s for coloration), and exceptional cycling stability (95.7 % after 10,000 cycles, and 77.4 % after 15,000 cycles). This article effectively explores a straightforward method for fabricating high-performance all-solid-state ECDs, simplifying the process flow and enhancing the application prospects for ECDs.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113193"},"PeriodicalIF":6.3,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419438","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Failure modes of silicon heterojunction photovoltaic modules in damp heat environment: Sodium and moisture effects 湿热环境下硅异质结光伏组件的失效模式:钠和湿气的影响
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-10-03 DOI: 10.1016/j.solmat.2024.113190
Lucie Pirot-Berson , Romain Couderc , Romain Bodeux , Julien Dupuis
{"title":"Failure modes of silicon heterojunction photovoltaic modules in damp heat environment: Sodium and moisture effects","authors":"Lucie Pirot-Berson ,&nbsp;Romain Couderc ,&nbsp;Romain Bodeux ,&nbsp;Julien Dupuis","doi":"10.1016/j.solmat.2024.113190","DOIUrl":"10.1016/j.solmat.2024.113190","url":null,"abstract":"<div><div>Silicon heterojunction (SHJ) solar cells are expected to gain significant market share in the coming years. In the field, among identified degradation modes, moisture-induced degradation can be a significant concern for this solar cell technology and should be monitored. This work investigates the moisture-induced degradation mechanisms in SHJ cells encapsulated in different module configurations. Damp heat (DH) testing was performed under IEC 61215 standard conditions (85 °C and 85% relative humidity) for up to 2000 h. Different degradation mechanisms are identified after DH aging, due to moisture alone or in combination with sodium ions originating from photovoltaic glass leaching. Under the influence of moisture, these ions can migrate into the cell and degrade the cell passivation, resulting in massive power losses up to 57.6% of the initial value after 1500 h of DH aging. By using other types of glass, glass-glass module configurations show less than 3% of power losses after 2000 h of DH aging. The front side of the cell is much more sensitive than the rear side where the emitter of the cell is. After highlighting the impact of sodium, moisture alone was studied with a module configuration without glass. In that case, the degradation is characterized by increased series resistance without passivation losses.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113190"},"PeriodicalIF":6.3,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimizing electron transport layers for high-efficiency perovskite solar cells using impedance spectroscopy 利用阻抗光谱学优化高效率过氧化物太阳能电池的电子传输层
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-10-02 DOI: 10.1016/j.solmat.2024.113196
Marouan Khalifa , Marwa Dkhili , Selma Aouida , Hatem Ezzaouia
{"title":"Optimizing electron transport layers for high-efficiency perovskite solar cells using impedance spectroscopy","authors":"Marouan Khalifa ,&nbsp;Marwa Dkhili ,&nbsp;Selma Aouida ,&nbsp;Hatem Ezzaouia","doi":"10.1016/j.solmat.2024.113196","DOIUrl":"10.1016/j.solmat.2024.113196","url":null,"abstract":"<div><div>The best interface for a perovskite solar cell is designed to facilitate effective charge transport to achieve a high-power conversion efficiency. Tin dioxide (SnO<sub>2</sub>) is widely recognized as an electron transport material for perovskite solar cells, offering advantages such as low hysteresis, low defect concentration, and low fabrication temperature. However, the low conduction band edge of SnO<sub>2</sub> restricts the built-in potential of the solar cell device. In this study, we designed a double layer of electron transport by applying zinc oxide (ZnO) on SnO<sub>2</sub> to improve the electron transport properties in perovskite solar cells. The bilayer of electron transport enhances the interfaces between the perovskite and the electron transport layer, leading to an improvement in the efficiency and stability of solar cell devices up to 11.71 % compared to a single SnO2 layer device with a PCE of 9.06 %. The introduction of ZnO reduces charge recombination, resulting in a lower recombination resistance (Rrec). Also, charge transfer resistance (Rct) of ZnO/SnO<sub>2</sub> increased to 16.6KΩ compared to a single SnO<sub>2</sub> layer device with a Rct of 5.29KΩ. Our findings provide valuable insights into the design of electron transport layers for perovskite solar cells and highlight the importance of electrochemical impedance spectroscopy in understanding the dynamic processes that govern their performance.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113196"},"PeriodicalIF":6.3,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Compact multilayer selective absorbers based on amorphous carbon for solar-thermal conversion 基于非晶碳的紧凑型多层选择性吸收器,用于太阳能-热转换
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-10-01 DOI: 10.1016/j.solmat.2024.113175
Junli Su , Dingquan Liu , Gang Chen , Chong Ma , Sheng Zhou , Xingyu Li , Kaixuan Wang , Qiuyu Zhang , Haihan Luo
{"title":"Compact multilayer selective absorbers based on amorphous carbon for solar-thermal conversion","authors":"Junli Su ,&nbsp;Dingquan Liu ,&nbsp;Gang Chen ,&nbsp;Chong Ma ,&nbsp;Sheng Zhou ,&nbsp;Xingyu Li ,&nbsp;Kaixuan Wang ,&nbsp;Qiuyu Zhang ,&nbsp;Haihan Luo","doi":"10.1016/j.solmat.2024.113175","DOIUrl":"10.1016/j.solmat.2024.113175","url":null,"abstract":"<div><div>In addressing the energy crisis and climate change, environmentally sustainable materials and structures with heightened absorption and enhanced photothermal conversion efficiency are urgently demanded. In this study, a series of ultrabroadband, omnidirectional, and near-perfect solar radiation absorbers based on amorphous carbon (a-C) were fabricated by magnetron sputtering. These absorbers, featuring 4, 6, and 8-layer compact multilayer thin film structures, exhibited measured absorption of 96.8 %, 96.5 %, and 96.6 % in the range of 300–2500 nm, respectively. The high absorption efficiency delves into the synergistic effects of intrinsic absorption of a-C and enhanced absorption through thin film interference. Through microstructure analysis, the reduced absorption compared to design originates from the optical thickness mismatch caused by the unstable growth rate of a-C. In addition, the absorbers show very slight variations in absorption within 40° and maintain a high absorption of more than 80 % in the incident angle of 60°. For samples with different air annealing temperatures from 100 to 250 °C, the microstructure, morphology, and optical properties were systematically investigated. The appearance of oxygen channels due to surface defects or voids leads to the oxidation reaction of the diffused Ti atoms at high temperature. Notably, the proposed absorber can be fabricated by a lithography-free method, paving a way for large-area application of a-C.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113175"},"PeriodicalIF":6.3,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Weather resistant low-e coatings on polycarbonate substrates transparent to 5G signals 聚碳酸酯基板上的耐候性低辐射涂层对 5G 信号透明
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-09-30 DOI: 10.1016/j.solmat.2024.113181
Luqman Yunos, Kamil Zuber, Peter J. Murphy, Marta Llusca Jane
{"title":"Weather resistant low-e coatings on polycarbonate substrates transparent to 5G signals","authors":"Luqman Yunos,&nbsp;Kamil Zuber,&nbsp;Peter J. Murphy,&nbsp;Marta Llusca Jane","doi":"10.1016/j.solmat.2024.113181","DOIUrl":"10.1016/j.solmat.2024.113181","url":null,"abstract":"<div><div>Low emissivity (low-e) windows contain a semi-transparent multilayer coating that consists of ultra-thin metallic and dielectric layers (nano-scale) which block the infrared (IR) radiation from the Sun. However, there are two major drawbacks in the technology: firstly, the lack of environmental stability due to the metallic content in the low-e coating. Secondly, the metallic layers attenuate modern-day telecommunications such as Fifth Generation (5G) signals. As there is an ever-increasing demand to reduce energy consumption plus having reliable interior-to-exterior signal coverage, a smarter design for low-e windows is required. In this study, low-e coatings, with the structure TiO<sub>2</sub>/NiCr/Ag/NiCr/TiO<sub>2</sub>, were deposited on polycarbonate (PC) substrates by magnetron sputtering. To improve environmental stability, a transparent siloxane resin was applied on top. To enhance the 5G signal transmittance, the Frequency Selective Surface (FSS) technique was applied, and hexagonal patterns were laser ablated from the Ag layers. The samples were characterised using spectrophotometry, signal attenuation measurements, salt spray tests, and both accelerated and outdoor weathering. This work demonstrates that the FSS patterning improves the low-e coating transmittance to 5G signals, and the top protective coating contributes to extend the lifetime of the coatings as demonstrated by aggressive durability tests.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113181"},"PeriodicalIF":6.3,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Optimizing strategy of bifacial TOPCon solar cells with front-side local passivation contact realized by numerical simulation 通过数值模拟实现具有正面局部钝化接触的双面 TOPCon 太阳能电池的优化策略
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-09-30 DOI: 10.1016/j.solmat.2024.113189
Zixiao Zhou , Qian Kang , Zhaoqing Sun , Yongcai He , Jingjie Li , Chang Sun , Chaowei Xue , Minghao Qu , Xiaoqing Chen , Zilong Zheng , Bo Wang , Hui Yan , Xixiang Xu , Yongzhe Zhang
{"title":"Optimizing strategy of bifacial TOPCon solar cells with front-side local passivation contact realized by numerical simulation","authors":"Zixiao Zhou ,&nbsp;Qian Kang ,&nbsp;Zhaoqing Sun ,&nbsp;Yongcai He ,&nbsp;Jingjie Li ,&nbsp;Chang Sun ,&nbsp;Chaowei Xue ,&nbsp;Minghao Qu ,&nbsp;Xiaoqing Chen ,&nbsp;Zilong Zheng ,&nbsp;Bo Wang ,&nbsp;Hui Yan ,&nbsp;Xixiang Xu ,&nbsp;Yongzhe Zhang","doi":"10.1016/j.solmat.2024.113189","DOIUrl":"10.1016/j.solmat.2024.113189","url":null,"abstract":"<div><div>The tunnelling oxide passivation contact (TOPCon) solar cells have been impressive in the global photovoltaic (PV) market originating from their high efficiency and stability. However, it exhibits significant recombination losses due to its boron diffusion, laser damage and metal-semiconductor contact on front side. The bifacial TOPCon structure demonstrates massive potential in the improvement of passivation and contact performance with the premise that it can solve the parasitic absorption of polycrystalline silicon (poly-Si). In this study, the localized poly finger structure with excellent optics and passivation performance is designed in the front side of bifacial solar cells to compare with traditional TOPCon and full-area poly passivation devices. The theoretical efficiency and detailed power loss analysis in our simulation reveal that suppressing the recombination of FSF (front surface field) and the contact area is the crucial strategy to improve device performance, with optimized efficiency of 26.62 % and <em>FF</em> of 85.16 %. These results indicate that the route of BJ (back junction) structure containing localized selective contact and full coverage high-quality passivation holds potential in realizing both high <em>J</em><sub>sc</sub> and <em>V</em><sub>oc</sub> for FBC (front and back contact) solar cells, featuring great instructive significance for future industrialization of PV production.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113189"},"PeriodicalIF":6.3,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Unveiling the origin of metal contact failures in TOPCon solar cells through accelerated damp-heat testing 通过加速湿热测试揭示 TOPCon 太阳能电池金属触点故障的根源
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-09-30 DOI: 10.1016/j.solmat.2024.113188
Xinyuan Wu , Chandany Sen , Xutao Wang , Yuhao Cheng , Ruirui Lv , Hao Song , Yuanjie Yu , Baochen Liao , Sheng Ma , Muhammad Umair Khan , Alison Ciesla , Bram Hoex
{"title":"Unveiling the origin of metal contact failures in TOPCon solar cells through accelerated damp-heat testing","authors":"Xinyuan Wu ,&nbsp;Chandany Sen ,&nbsp;Xutao Wang ,&nbsp;Yuhao Cheng ,&nbsp;Ruirui Lv ,&nbsp;Hao Song ,&nbsp;Yuanjie Yu ,&nbsp;Baochen Liao ,&nbsp;Sheng Ma ,&nbsp;Muhammad Umair Khan ,&nbsp;Alison Ciesla ,&nbsp;Bram Hoex","doi":"10.1016/j.solmat.2024.113188","DOIUrl":"10.1016/j.solmat.2024.113188","url":null,"abstract":"<div><div>Tunnel oxide passivated contact (TOPCon) solar cells are expected to dominate the global photovoltaic market in the coming decade thanks to rapid advancements in power conversion efficiency (<em>PCE</em>). However, there are concerns about the reliability of TOPCon modules, particularly in hot and humid conditions. The current module-level fundamental analysis strategies for TOPCon solar cells provide too slow feedback for rapid process development. This study explores the degradation of metal contacts in TOPCon solar cells under accelerated testing conditions of 85 °C and 85 % relative humidity (DH85). The degradation was induced by two commonly used sodium-related salts, sodium bicarbonate (NaHCO<sub>3</sub>) and sodium chloride (NaCl), in the testing of the solar cells. When applied to the front side, NaHCO<sub>3</sub> caused a ∼5%<sub>rel</sub> <em>PCE</em> reduction after 100-h DH85 exposure, while NaCl leads to a more significant ∼92%<sub>rel</sub> <em>PCE</em> reduction. The primary cause of degradation is a considerable increase in series resistance (<em>R</em><sub><em>s</em></sub>), likely due to electrochemical reactions within the Ag/Al paste. When the salts are applied to the rear of the TOPCon solar cell, the degradation becomes more complex. NaHCO<sub>3</sub> increases recombination and results in a deterioration of the contact, resulting in a ∼16%<sub>rel</sub> <em>PCE</em> reduction after 100-h DH85 testing. Conversely, NaCl primarily causes a decline in open-circuit voltage (<em>V</em><sub><em>oc</em></sub>) and a ∼4%<sub>rel</sub> <em>PCE</em> loss. This manuscript primarily investigates degradation mechanisms related on the rear side, with a focus on significant oxidation occurring at the interface between Ag and Si. These findings highlight the susceptibility of TOPCon solar cells to contact corrosion, emphasizing the electrochemical reactivity of metallisation as a potential risk for long-term TOPCon module operation. This study provides crucial insights into TOPCon cell degradation mechanisms, which are essential for optimising performance and enhancing the long-term reliability of TOPCon modules.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113188"},"PeriodicalIF":6.3,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Improved electrical contact properties in Indium-free silicon heterojunction solar cells with amorphous SnO2 TCO layers 利用非晶态二氧化锡 TCO 层改善无铟硅异质结太阳能电池的电接触特性
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-09-28 DOI: 10.1016/j.solmat.2024.113191
Hitoshi Sai, Takashi Koida, Takuya Matsui
{"title":"Improved electrical contact properties in Indium-free silicon heterojunction solar cells with amorphous SnO2 TCO layers","authors":"Hitoshi Sai,&nbsp;Takashi Koida,&nbsp;Takuya Matsui","doi":"10.1016/j.solmat.2024.113191","DOIUrl":"10.1016/j.solmat.2024.113191","url":null,"abstract":"<div><div>Silicon heterojunction (SHJ) solar cells are recognized as one of the most efficient architectures in silicon-based photovoltaic devices. However, the reliance on indium (In)-based transparent conductive oxides (TCO) is anticipated to constrain their production capacity due to the critical and economically volatile nature of In. Recently, low-temperature-grown amorphous SnO<sub>2</sub> (a-SnO<sub>2</sub>) films have been explored as an earth-abundant alternative TCO material. In this study, we examine the electrical contact properties of a-SnO<sub>2</sub> layers employed as TCO layers in SHJ cells, focusing on their interaction with the underlying carrier selective contact layers. Our findings indicate that a stack of doped amorphous silicon (a-Si:H) and a-SnO<sub>2</sub> exhibits relatively high specific contact resistivity, leading to a significant reduction in the device's fill factor. To address this issue, we propose two approaches: the insertion of a thin ZnO-based TCO layer between a-Si:H and a-SnO<sub>2</sub>, and the use of nanocrystalline silicon layers in place of a-Si:H. Both approaches effectively reduce the contact resistivity, resulting in improvements in fill factor and conversion efficiency comparable to those of benchmark device with In-based TCOs. Based on these findings, we demonstrate a high-efficiency, In-free, SnO<sub>2</sub>-based SHJ cell.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113191"},"PeriodicalIF":6.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study on the growth kinetics of Ag3Sn alloy layer and fatigue lifetime prediction of PV interconnection Ag3Sn 合金层的生长动力学研究与光伏互连的疲劳寿命预测
IF 6.3 2区 材料科学
Solar Energy Materials and Solar Cells Pub Date : 2024-09-28 DOI: 10.1016/j.solmat.2024.113186
Jun Chen, Yan Li, Chentong Zhang, Liuqing Huang, Xuetao Luo
{"title":"Study on the growth kinetics of Ag3Sn alloy layer and fatigue lifetime prediction of PV interconnection","authors":"Jun Chen,&nbsp;Yan Li,&nbsp;Chentong Zhang,&nbsp;Liuqing Huang,&nbsp;Xuetao Luo","doi":"10.1016/j.solmat.2024.113186","DOIUrl":"10.1016/j.solmat.2024.113186","url":null,"abstract":"<div><div>The electrical conductivity and reliability performances of modules remains a challenge for extending the life-cycling in the widely practical crystalline silicon photovoltaic. Photovoltaic module reliability is severely destroyed by the stress accumulation resulted from the non-stop growth of Ag<sub>3</sub>Sn intermetallic compounds at the solder joint. The growth behavior and microstructural evolution of Ag<sub>3</sub>Sn intermetallic compounds during continuous aging was thoroughly investigated, which provided a method for predicting the fatigue life of solder joints. The results indicated that the Ag<sub>3</sub>Sn intermetallic compounds at the solder joint were formed by continuous diffusion between the brazing material and the Ag electrode in a porous silver electrode, which was significantly affected by temperature and time. When the stress of Ag<sub>3</sub>Sn intermetallic compounds was less than 26.7 MPa, the equivalent Ag<sub>3</sub>Sn thickness was greater than 1.67 μm. During the soldering process, a reasonable soldering force of 1.44 N was required, corresponding to an initial Ag<sub>3</sub>Sn thickness of 1.67–3.02 μm. Moreover, the growth of the intermetallic compounds layer was found to be logarithmic with respect to time and exponential with temperature. Based on the dynamic model of Ag<sub>3</sub>Sn and outdoor temperature data of typical cities in Munich, Taizhou, and Sydney with variable latitudes, the fatigue life of solder joints was accurately predicted through finite element analysis. The work provides a theoretical foundation for the precise categorization of photovoltaic modules in diverse applications.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"278 ","pages":"Article 113186"},"PeriodicalIF":6.3,"publicationDate":"2024-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142357522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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