Solar Energy Materials and Solar Cells最新文献_第7页

Enhancing efficiency of dense array CPV receivers with controlled DC-DC converters and adaptive microfluidic cooling under non-uniform solar irradiance 利用可控 DC-DC 转换器和自适应微流体冷却技术提高非均匀太阳辐照条件下密集阵列 CPV 接收器的效率

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-11-02 DOI: 10.1016/j.solmat.2024.113262

Desideri Regany , Francesc Majós Palau , Alicia Crespo , Jérôme Barrau , Montse Vilarrubí , Joan Rosell-Urrutia

{"title":"Enhancing efficiency of dense array CPV receivers with controlled DC-DC converters and adaptive microfluidic cooling under non-uniform solar irradiance","authors":"Desideri Regany , Francesc Majós Palau , Alicia Crespo , Jérôme Barrau , Montse Vilarrubí , Joan Rosell-Urrutia","doi":"10.1016/j.solmat.2024.113262","DOIUrl":"10.1016/j.solmat.2024.113262","url":null,"abstract":"<div><div>Concentrating solar technologies offer substantial potential for optimizing solar energy for heat and power generation, particularly in green hydrogen production. This study investigates the use of commercial high efficiency concentrated photovoltaic (CPV) cells in a central tower concentrating solar system to enhance energy conversion efficiency. By integrating DC-DC converters with self-adaptive microfluidic cooling systems, we address current mismatches and temperature variations that affect CPV performance. The novel receiver design ensures scalability for large-scale implementations by implementing the electrical connections between DC-DC converters and each CPV cell without creating shaded areas. We numerically model and simulate the thermodynamic and electrical characteristics of a dense array CPV receiver, evaluating six illumination profiles. Our results indicate a significant improvement in receiver efficiency compared to the traditional configuration with bypass diodes, demonstrating an increase from 23.4 % to 30.3 % under a central Gaussian illumination profile, and reaching up to 38 % relative efficiency improvement depending on the applied profile. Power transfer losses decrease from 26 % to 10 % when 200 kW/m<sup>2</sup> of illumination non-uniformity occurs. The proposed solution enhances reliability and energy conversion efficiency, presenting a viable path forward for large-scale CPV applications.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113262"},"PeriodicalIF":6.3,"publicationDate":"2024-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571842","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

Effect of manufacturing tolerances on Micro-CPV assemblies: A quantitative approach based on statistical modeling 制造公差对微型光伏组件的影响：基于统计建模的定量方法

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-11-01 DOI: 10.1016/j.solmat.2024.113256

Elisa Kaiser , Maike Wiesenfarth , Peter Schöttl , Marc Steiner , Stefan W. Glunz , Henning Helmers

{"title":"Effect of manufacturing tolerances on Micro-CPV assemblies: A quantitative approach based on statistical modeling","authors":"Elisa Kaiser , Maike Wiesenfarth , Peter Schöttl , Marc Steiner , Stefan W. Glunz , Henning Helmers","doi":"10.1016/j.solmat.2024.113256","DOIUrl":"10.1016/j.solmat.2024.113256","url":null,"abstract":"<div><div>In micro-concentrator photovoltaics (micro-CPV) minimized components as cells (<1 × 1 mm<sup>2</sup>) and lenses are used, promising significant cost reductions through parallel manufacturing and reduced material volumes. However, tolerances, such as deviations from nominal size, geometry or position, impact module performance, especially for non-ideal alignment towards the sun. To study the interplay of different, independent tolerances and their effects on current generation, a comprehensive parameter study is practically not feasible, because of the vast number of possible combinations. In this work, we introduce a novel method for assessing tolerances by employing a Monte-Carlo approach to randomly select and combine tolerances in a cell-lens unit. It allows to identify relevant tolerances and quantitatively assess their influence on module performance, namely optical efficiency, and photocurrent as function of angle of incidence and, thus, acceptance angle. We apply the model to a micro-CPV module developed at Fraunhofer ISE and use tolerance distributions based on measurements. We find that the most crucial parameter is the position of the secondary optical element. Given the measured tolerance distributions, the acceptance angles for 90 % of the cases are above 0.5° for 10 % current loss. The developed approach is a crucial tool for identifying and assessing critical tolerances within a manufacturing line, facilitating techno-economic optimization of design and manufacturing processes.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113256"},"PeriodicalIF":6.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571840","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

In situ high-temperature emissivity measurements of heat-treated, silicon coated stainless steel for solar thermal applications 热处理硅涂层不锈钢的原位高温发射率测量，用于太阳能热应用

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-11-01 DOI: 10.1016/j.solmat.2024.113264

V. Amrutha , Atasi Dan , Jon Gabirondo-Lopez , Telmo Echaniz , Raquel Fuente , Harish C. Barshilia , Gabriel A. Lopez

{"title":"In situ high-temperature emissivity measurements of heat-treated, silicon coated stainless steel for solar thermal applications","authors":"V. Amrutha , Atasi Dan , Jon Gabirondo-Lopez , Telmo Echaniz , Raquel Fuente , Harish C. Barshilia , Gabriel A. Lopez","doi":"10.1016/j.solmat.2024.113264","DOIUrl":"10.1016/j.solmat.2024.113264","url":null,"abstract":"<div><div>Understanding thermal emissivity at high temperatures is crucial for developing efficient materials for solar thermal applications. We present a new approach for creating an efficient material for solar absorber by developing a nano structured surface on stainless steel substrate through Si deposition and annealing. We prepare five samples by annealing them at five temperatures between 700 °C and 1100 °C. Afterwards, we perform a systematic study of the spectral emissivity at elevated temperatures, focusing on different parameters: angle dependence, wavelength dependence, and temperature dependence. The spectral directional emissivity experiments performed in the mid-infrared range reveal a dielectric behavior of the samples in the short wavelength region (<em>λ</em> < 6 μm) and metallic behavior in the long wavelength region (<em>λ</em> > 12 μm). The results indicate an increase in hemispherical and total normal emissivity with measurement temperature (from 200 °C to 700 °C), influenced by oxide/silicide formation due to interdiffusion, and by surface roughness. Notably, samples annealed at 900 °C and 1000 °C demonstrate enhanced thermal stability at 700 °C, showcasing promising characteristics for high-temperature applications. Consequently, this study presents a viable method for developing cost-effective silicon-based solar absorber coatings on stainless steel with tailored properties for solar thermal applications along with its real time high temperature emissivity details.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113264"},"PeriodicalIF":6.3,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142571839","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

Interface-enhanced germanium selenide solar cells comprising an ultrathin and uniform antimony selenide buffer layer via hydrothermal approach 通过水热法获得包含超薄均匀硒化锑缓冲层的界面增强型硒化锗太阳能电池

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-10-31 DOI: 10.1016/j.solmat.2024.113260

Jing Zhou , Shengwen Yang , Li Gao , Zhenming Qu , Yu Cao , Xiaoming Yu , Xuan Yu , Jian Ni , Jianjun Zhang

{"title":"Interface-enhanced germanium selenide solar cells comprising an ultrathin and uniform antimony selenide buffer layer via hydrothermal approach","authors":"Jing Zhou , Shengwen Yang , Li Gao , Zhenming Qu , Yu Cao , Xiaoming Yu , Xuan Yu , Jian Ni , Jianjun Zhang","doi":"10.1016/j.solmat.2024.113260","DOIUrl":"10.1016/j.solmat.2024.113260","url":null,"abstract":"<div><div>Germanium selenide (GeSe) is a promising thin film photovoltaic absorber material owing to its excellent optoelectronic properties, high stability, and low toxicity. Interface engineering by introducing an ultrathin antimony selenide (Sb<sub>2</sub>Se<sub>3</sub>) buffer layer between the CdS electron transport layer and GeSe absorber layer is an effective technique for enhancing solar cell performance. However, the key to this technique is the fabrication of a uniform and smooth Sb<sub>2</sub>Se<sub>3</sub> buffer layer with minimal thickness. In this study, instead of the conventional closed-space sublimation method, a hydrothermal method was employed to slowly grow an Sb<sub>2</sub>Se<sub>3</sub> buffer layer with a thickness of approximately 8 nm. The Se/Na<sub>2</sub>SO<sub>3</sub> molar ratio in the selenium source during the hydrothermal synthesis was adjusted; a molar ratio of 1:2 led to an uneven Sb<sub>2</sub>Se<sub>3</sub> buffer layer thickness, whereas a molar ratio of 1:10 resulted in the formation of Sb<sub>2</sub>O<sub>3</sub> particles on the buffer layer surface. When the Se/Na<sub>2</sub>SO<sub>3</sub> molar ratio was 1:6, a smooth, uniform, dense, and impurity-free Sb<sub>2</sub>Se<sub>3</sub> buffer layer was obtained, achieving the highest efficiency of 3.33 % in a GeSe solar cell. Moreover, GeSe solar cells with hydrothermally grown Sb<sub>2</sub>Se<sub>3</sub> buffer layers demonstrated superior device interface properties and efficiency comparable with those using Sb<sub>2</sub>Se<sub>3</sub> buffer layers deposited via closed-space sublimation. This technique offers an effective method for steadily improving the performance of GeSe solar cells.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113260"},"PeriodicalIF":6.3,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554350","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

Thermally driven memory flexible phase change hydrogel for solar energy efficient building thermal management 用于太阳能高效建筑热管理的热驱动记忆柔性相变水凝胶

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-10-30 DOI: 10.1016/j.solmat.2024.113248

Yujiao Guo , Xiangrui Guo , Xue Yin , Xiangdong Zhang , Shuwen Hu , Yumeng Zhang , Huizhi Yang

{"title":"Thermally driven memory flexible phase change hydrogel for solar energy efficient building thermal management","authors":"Yujiao Guo , Xiangrui Guo , Xue Yin , Xiangdong Zhang , Shuwen Hu , Yumeng Zhang , Huizhi Yang","doi":"10.1016/j.solmat.2024.113248","DOIUrl":"10.1016/j.solmat.2024.113248","url":null,"abstract":"<div><div>Sodium sulfate decahydrate (SSD), as a typical inorganic phase change material (PCM), can be used to improve solar energy utilization efficiency and thermal management. However, its inherent problems of leakage, phase separation and strong rigidity severely limit its practical application. In this work, a phase change hydrogel with shape remembering behavior and high photothermal conversion capability was designed using konjac glucan and acrylamide copolymer as supporting material, SSD as PCM, and hydrothermal carbon (HTC) as photothermal converter and thermal conductive filler. In view of the hydrogel hydrophilic cross-linked 3D network, good compatibility with SSD, can effectively solve the problem of SSD high temperature leakage, SSD packaging efficiency up to 90.4 wt%. At the same time, HTC forms a continuous and effective photothermal conversion and thermal conductivity path with the help of the 3D network of hydrogel, and the phase change hydrogel shows excellent photothermal conversion performance and thermal conductivity (0.89–1.11 W m<sup>−1</sup> K<sup>−1</sup>). In addition, the phase change hydrogels exhibited excellent thermally driven shape memory behavior (385 s) and mechanical strength up to 0.67 MPa. This provides a new feasible way to construct green buildings instead of air conditioning for winter insulation.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113248"},"PeriodicalIF":6.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142539887","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

Influence of module types on theoretical efficiency and aesthetics of colored photovoltaic modules with luminescent down-shifting layers 模块类型对带有下移发光层的彩色光伏模块理论效率和美观度的影响

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-10-30 DOI: 10.1016/j.solmat.2024.113254

Jaehoon Kim

{"title":"Influence of module types on theoretical efficiency and aesthetics of colored photovoltaic modules with luminescent down-shifting layers","authors":"Jaehoon Kim","doi":"10.1016/j.solmat.2024.113254","DOIUrl":"10.1016/j.solmat.2024.113254","url":null,"abstract":"<div><div>Building-integrated photovoltaics (BIPVs) are gaining recognition in urban settings for overcoming spatial constraints and enabling photovoltaic (PV) power generation. However, the dark appearance of traditional PV modules often hinders aesthetic integration and market adoption. To address this issue, research has focused on colored photovoltaic modules (CPMs) using a luminescent down-shifting layer (LDS) with high color purity and a broad color range. Despite advancements, most previous studies have focused on experimental implications, while the theoretical efficiency limits of LDS-based CPMs remain underexplored. The present manuscript aims to bridge this gap by elucidating the correlation between the optical characteristics of LDS-based CPMs and their desired color attributes, utilizing the Natural Color System (NCS) and CIELAB color space to rigorously explore the influence of color characteristics perceived by human observers. Furthermore, this study conducts a comprehensive evaluation of CPM performance across various module types, offering new insights into the field of BIPVs and providing valuable perspectives for their efficient and aesthetic integration into urban landscapes.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113254"},"PeriodicalIF":6.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554345","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

Integrating AgNPs-decorated phase change microcapsules into UV-cured PUA with enhanced thermal conductivity for solar thermal energy conversion and storage 将 AgNPs 装饰的相变微胶囊集成到紫外固化聚氨酯中，增强导热性，用于太阳能热能转换和储存

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-10-30 DOI: 10.1016/j.solmat.2024.113253

Fan Zhou , Yanqi Ma , Wentong Zhao , Li Zhang , Ying Chen , Xinxin Sheng

{"title":"Integrating AgNPs-decorated phase change microcapsules into UV-cured PUA with enhanced thermal conductivity for solar thermal energy conversion and storage","authors":"Fan Zhou , Yanqi Ma , Wentong Zhao , Li Zhang , Ying Chen , Xinxin Sheng","doi":"10.1016/j.solmat.2024.113253","DOIUrl":"10.1016/j.solmat.2024.113253","url":null,"abstract":"<div><div>Developing smart flexible film based on high thermal conductivity phase change microcapsules (MPCM) is essential for personal thermal management, which could provide sufficient warmth for individuals outdoor through the phase change behavior. Herein, we report the synthesis of n-octadecane MPCM with a composite shell of silver nanoparticles (AgNPs) and melamine-formaldehyde (MF) resin, followed by surface modification to create Ag@MPCM with enhanced thermal conductivity. These were combined with PUA resin to fabricate composite films exhibiting phase change properties. The 1Ag@MPCM (the ratio of AgNO<sub>3</sub> to MPCM is 1:1 during modification) demonstrated an ideal thermal storage capacity (up to 108.20 J/g). The thermal conductivity of it exhibited 0.643 W m<sup>−1</sup> K<sup>−1</sup>, representing a 242 % improvement compared MPCM. AgNPs, serving as thermal conductive fillers, exhibited localized surface plasmon resonance (LSPR). It enhances the radiative absorption capability and thermal conductivity of MPCM, thereby accelerating the phase change process. Compared to pure PUA, the thermal conductivity of 30Ag@MPCM-PUA (0.186 W m<sup>−1</sup> K<sup>−1</sup>) was increased by 29 %. After 300 s of simulated solar irradiation, the temperature of 30Ag@MPCM-PUA is 48.1 °C higher than that of PUA. Furthermore, the 30Ag@MPCM-PUA exhibited good thermal conductivity and excellent photothermal conversion properties. Overall, 30Ag@MPCM-PUA holds significant potential for personal thermal management field.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113253"},"PeriodicalIF":6.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554344","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

Multi-field coupled analysis of thermal and opto-electrical conversion in InGaAs thermophotovoltaics 对 InGaAs 热光电转换的多场耦合分析

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-10-30 DOI: 10.1016/j.solmat.2024.113242

Hong-Yu Pan, Xin-Lin Xia, Xue Chen

{"title":"Multi-field coupled analysis of thermal and opto-electrical conversion in InGaAs thermophotovoltaics","authors":"Hong-Yu Pan, Xin-Lin Xia, Xue Chen","doi":"10.1016/j.solmat.2024.113242","DOIUrl":"10.1016/j.solmat.2024.113242","url":null,"abstract":"<div><div>Based on near-realistic energy conversion and transport processes, a coupled model of an InGaAs thermophotovoltaic (TPV) cell is developed to analyze the influence of coupled behaviors and temperature-dependent properties from optical, electrical, and thermal perspectives. Under 2000 K blackbody radiation, with air- (20 W m<sup>−2</sup> K<sup>−1</sup>) and water-cooling (3000 W m<sup>−2</sup> K<sup>−1</sup>) conditions, it is observed that compared to the isothermal uncoupled model, the maximum output power shows a notable decline of 9.81 %. Furthermore, under different emitter temperatures, cooling conditions, and selective emissivity spectra, the thermal and electrical characteristics are examined to comprehensively evaluate TPV system performance. Increasing the emitter temperature improves system efficiency within an appropriate range. At an emitter temperature of 2000 K, the efficiency reaches a peak of 26.9 %. The intensity of air cooling has a minimal impact on system efficiency (0.03 %), whereas efficiency benefits significantly from enhanced water-cooling power (37 %), though the rate of improvement gradually diminishes. Additionally, as the selective emissivity spectrum broadens, the coupling behavior causes a significant decline of approximately 3 % in system efficiency, with the corresponding emissivity width decreasing by at least 100 nm. With the blueshift of selective emissivity, the efficiency increases monotonically, while the cell temperature peaks at 323.5 K.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113242"},"PeriodicalIF":6.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554348","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

cpvlib: A comprehensive open-source tool for modeling CPV systems cpvlib：为 CPV 系统建模的综合开源工具

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-10-30 DOI: 10.1016/j.solmat.2024.113245

Rubén Núñez , Marcos Moreno , Rebeca Herrero , Steve Askins , Ignacio Antón , César Domínguez

{"title":"cpvlib: A comprehensive open-source tool for modeling CPV systems","authors":"Rubén Núñez , Marcos Moreno , Rebeca Herrero , Steve Askins , Ignacio Antón , César Domínguez","doi":"10.1016/j.solmat.2024.113245","DOIUrl":"10.1016/j.solmat.2024.113245","url":null,"abstract":"<div><div>The design and simulation of concentrator photovoltaic (CPV) systems necessitate precise modeling tools, for which some commercial and open-source options exist. However, when new technologies or applications need to be modeled, they can present some limitations: lack of documentation transparency and inability to extend existing models, or little flexibility to do it. For instance, the novel hybrid CPV/flat-plate module, conceived by Insolight and developed within the HIPERION project, required the ability to model integrated tracking and dual use of incident irradiance, which was not possible with existing tools. Addressing these issues, cpvlib is introduced as a comprehensive, open-source tool offering modular and adaptable functionalities for CPV-based systems, built as an extension of the popular pvlib python library.</div><div>cpvlib's design enables the simulation of various CPV-based configurations, incorporating advanced architectures such as integrated tracking and hybrid CPV-flat plate modules. The library uses PVSyst's utilization factors to model deviations from the single-diode model, accounting for spectral and thermal effects. Its class structure leverages object-oriented programming principles, ensuring ease of use and extension.</div><div>The validation of cpvlib is carried out through the modeling and long-term monitoring of Insolight's hybrid Si/III-V translucent planar micro-tracking modules, achieving a root mean square error of 3.5 % in case of Si cells and 2.7 % for III-V CPV cells. The tool accounts for complex behaviors like air mass impact on CPV performance, angle of incidence limits, and light spillage. The annual energy yield for a hybrid module is computed using typical meteorological year data, showcasing cpvlib's practical application.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113245"},"PeriodicalIF":6.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554347","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

Grain boundary barrier model can explain the beneficial effect of alkali doping in Cu(In,Ga)Se2 solar cells 晶界势垒模型可解释 Cu(In,Ga)Se2 太阳能电池中碱掺杂的有利影响

IF 6.3 2区材料科学

Solar Energy Materials and Solar Cells Pub Date : 2024-10-30 DOI: 10.1016/j.solmat.2024.113252

Aniela Czudek , Aleksander Urbaniak , Alexander Eslam , Roland Wuerz , Malgorzata Igalson

{"title":"Grain boundary barrier model can explain the beneficial effect of alkali doping in Cu(In,Ga)Se2 solar cells","authors":"Aniela Czudek , Aleksander Urbaniak , Alexander Eslam , Roland Wuerz , Malgorzata Igalson","doi":"10.1016/j.solmat.2024.113252","DOIUrl":"10.1016/j.solmat.2024.113252","url":null,"abstract":"<div><div>Although the beneficial effect of alkali doping of Cu(In,Ga)Se<sub>2</sub> has been known for decades, there is still no agreement on its precise physical pathway. In this work we present a case for this effect being linked to the alkali-induced passivation of barriers at the grain boundaries (GBs). In this model, postulated earlier by, among all, C-S. Jiang and U. Rau, donor defects at the GBs result in downward band bending, creating energy barriers for holes and thus reducing the intergrain mobility, at the same time leading to the creation of depleted regions around GBs, decreasing apparent doping concentration. The effect of alkali doping would be through passivation of those donor defects, increasing both mobility and doping concentration.</div><div>Results of our systematic study on Cu(In,Ga)Se<sub>2</sub> thin films and solar cells doped with different concentrations of alkali metals (Na and K) point to the alkali effect leading to a simultaneous increase of both free hole concentration and hole mobility, irrespective of the type of alkali used. Additionally, the activation energy of conductivity – linked to the GB barrier height – decreased with an increase in alkali concentration. All of the above results are consistent with the grain boundary passivation model. To further test this hypothesis, experimental results were compared with SCAPS simulations of a multigrain CIGS thin film with varied concentration of donor defects located at the GBs. These simulations were in good quantitative agreement with experimental results with regards to conductivity, free hole concentration and GB barrier height.</div></div>","PeriodicalId":429,"journal":{"name":"Solar Energy Materials and Solar Cells","volume":"279 ","pages":"Article 113252"},"PeriodicalIF":6.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142554346","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