IF 6 3区工程技术

Solar RRL Pub Date : 2025-04-24 DOI: 10.1002/solr.202570080

Atittaya Naikaew, Supavidh Burimart, Ladda Srathongsian, Chaowaphat Seriwattanachai, Patawee Sakata, Kanokwan Choodam, Kittikhun Khotmungkhun, Waroot Kanlayakan, Pimsuda Pansa-Ngat, Ko Ko Shin Thant, Thanawat Kanlayapattamapong, Pipat Ruankham, Hideki Nakajima, Ratchadaporn Supruangnet, Pongsakorn Kanjanaboos

引用次数: 0

Effective In Situ TOPCon Gettering of Epitaxially Grown Silicon Wafers during Bottom Solar Cell Fabrication 底部太阳能电池制造中外延生长硅片有效的原位TOPCon捕集

IF 6 3区工程技术

Solar RRL Pub Date : 2025-04-03 DOI: 10.1002/solr.202400908

Clara Rittmann, Pascal Messmer, Florian Schindler, Jana-Isabelle Polzin, Armin Richter, Charlotte Weiss, Martin C. Schubert, Stefan Janz, Marion Drießen

{"title":"Effective In Situ TOPCon Gettering of Epitaxially Grown Silicon Wafers during Bottom Solar Cell Fabrication","authors":"Clara Rittmann, Pascal Messmer, Florian Schindler, Jana-Isabelle Polzin, Armin Richter, Charlotte Weiss, Martin C. Schubert, Stefan Janz, Marion Drießen","doi":"10.1002/solr.202400908","DOIUrl":"https://doi.org/10.1002/solr.202400908","url":null,"abstract":"Epitaxially grown silicon wafers (EpiWafers) have a lower carbon footprint than conventional wafers produced by ingot crystallization but have also a lower initial material quality which can be significantly improved by gettering. We show that in situ gettering during the application of asymmetric n-type and p-type tunnel oxide passivating contacts (TOPCon) increases the material quality of n-type EpiWafers when fabricating bottom solar cells for a perovskite-silicon tandem device. In specific, the gettering effect of the TOPCon layers is compared to phosphorus gettering by systematically evaluating minority charge carrier lifetimes of n-type EpiWafers with base resistivities between 0.5 and 16 Ωcm. For the 1.3 Ωcm EpiWafers, the average lifetimes increase from above 100 µs in the initial state to above 1 ms after TOPCon gettering as well as after phosphorus gettering. To evaluate the impact of the EpiWafers’ quality on cell performance, implied solar cell parameters are calculated from injection-dependent lifetime images for TOPCon bottom solar cell precursors with and without previous phosphorus gettering. The very high electronic wafer quality obtained after TOPCon processing demonstrates that the EpiWafers are very well suited for TOPCon bottom solar cells without the need of an additional phosphorus gettering step.","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 8","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202400908","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Suppressing Potential-Induced Degradation in Perovskite Solar Cells Through Sodium-Free Substrate 通过无钠衬底抑制钙钛矿太阳能电池的电位诱导降解

IF 6 3区工程技术

Solar RRL Pub Date : 2025-04-03 DOI: 10.1002/solr.202400921

Hasan Raza, Qisen Zhou, Zhaoyi Jiang, Aadil Mahboob, You Gao, Jianan Wang, Wenguang Liu, Yong Cai, Zhengtian Tan, Tianyin Miao, Salman Ali, Zonghao Liu, Wei Chen

{"title":"Suppressing Potential-Induced Degradation in Perovskite Solar Cells Through Sodium-Free Substrate","authors":"Hasan Raza, Qisen Zhou, Zhaoyi Jiang, Aadil Mahboob, You Gao, Jianan Wang, Wenguang Liu, Yong Cai, Zhengtian Tan, Tianyin Miao, Salman Ali, Zonghao Liu, Wei Chen","doi":"10.1002/solr.202400921","DOIUrl":"https://doi.org/10.1002/solr.202400921","url":null,"abstract":"Perovskite solar cells (PSCs) are a promising photovoltaic (PV) technology due to their superior power conversion efficiency (PCE). However, potential-induced degradation (PID) has been recognized as a critical issue in contemporary commercial solar systems, impeding reliability and commercialization. The migration of sodium (Na) ions from substrates is considered a key contributor to the PID of PV technologies under high-voltage stress conditions. Strategies for mitigating or suppressing PID remain underexplored in PSCs. Here, for the first time, an approach using a Na-free substrate is introduced to suppress the PID of PSCs under high humidity and elevated temperature, aligned with standard testing conditions (ICE 62804−1). It is demonstrated that Na-free glass-based devices maintained 91% of their initial PCE, while soda-lime glass (SLG)-based retained only 52%. After extended testing (1056 h), Na-free glass-based devices retained 96.61% of their initial PCE at 25°C and 60% relative humidity, outperforming SLG-based devices, which failed entirely after 576 h. Na-free glass-based devices recovered 99.6% of their initial PCE after 96 h of post-PID dark storage and retained 96.44% after 3072 h. These findings provide a pathway to accelerate the commercialization of PSCs.","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 8","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Silicon Heterojunction Solar Cells Featuring Localized Front Contacts 具有局部前触点的硅异质结太阳能电池

IF 6 3区工程技术

Solar RRL Pub Date : 2025-04-03 DOI: 10.1002/solr.202570071

Sebastian Smits, Yifeng Zhao, Paul Procel Moya, Luana Mazzarella, Olindo Isabella

引用次数: 0

Influence of Thermal Activation on Polysilicon Tunnel Junctions for Tunnel Oxide Passivating Contacts-Based Perovskite/Silicon Tandem Solar Cells 热活化对隧道氧化物钝化触点钙钛矿/硅串联太阳能电池多晶硅隧道结的影响

IF 6 3区工程技术

Solar RRL Pub Date : 2025-04-02 DOI: 10.1002/solr.202400876

Mario Hanser, Johannes Gry, Armin Richter, Jana-Isabelle Polzin, Jan Benick, Martin Bivour, Christian Reichel, Stefan W. Glunz

{"title":"Influence of Thermal Activation on Polysilicon Tunnel Junctions for Tunnel Oxide Passivating Contacts-Based Perovskite/Silicon Tandem Solar Cells","authors":"Mario Hanser, Johannes Gry, Armin Richter, Jana-Isabelle Polzin, Jan Benick, Martin Bivour, Christian Reichel, Stefan W. Glunz","doi":"10.1002/solr.202400876","DOIUrl":"https://doi.org/10.1002/solr.202400876","url":null,"abstract":"The presented investigation focuses on different thermal activation processes and their influence on the formation of a polysilicon tunnel junction as a recombination layer in perovskite/silicon tandem solar cells. The goals of this investigation are the optimization of the polysilicon tunnel junction and the comparison of different processing pathways to enable a lean process integration. Various process routes with different annealing sequences for the polysilicon tunnel junction were examined, using a laser-based rapid thermal process (RTP) and a conventional furnace anneal. The main challenge is to control the interdiffusion of p- as well as n-type dopants at the tunnel junction interface during the thermal activation process. On pre-annealed n-tunnel oxide passivating contact (TOPCon) layers, a low process temperature for the p-polysilicon activation is beneficial without the necessity of an additional diffusion blocking layer. If the n-TOPCon and the p-polysilicon layer are annealed simultaneously in one RTP, high temperatures are required, which are enabled by a diffusion blocking SiNx interlayer at the tunnel junction interface. Optimized tunnel junctions on TOPCon bottom cell precursors show low contact resistivity of only 30 mΩ cm2 with an implied open-circuit voltage as high as 726 mV. These results demonstrate the promising properties of the developed tunnel junctions regarding tandem cell integration.","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 8","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202400876","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

C3N2H5 Superalkali-Enhanced Halide Perovskites for High-Efficiency Photovoltaic Applications C3N2H5超碱增强卤化物钙钛矿用于高效光伏应用

IF 6 3区工程技术

Solar RRL Pub Date : 2025-03-30 DOI: 10.1002/solr.202500032

Tingwei Zhou, Anlong Kuang

{"title":"C3N2H5 Superalkali-Enhanced Halide Perovskites for High-Efficiency Photovoltaic Applications","authors":"Tingwei Zhou, Anlong Kuang","doi":"10.1002/solr.202500032","DOIUrl":"https://doi.org/10.1002/solr.202500032","url":null,"abstract":"The inherent instability of lead halide perovskites significantly limits their commercial applications, which has spurred extensive research into developing new halide perovskites. Herein, to identify novel halide perovskites suitable as light absorption materials, 24 promising candidates were systematically screened from a pool of over 1700 cations by applying constraints such as a vertical electron affinity of less than 3.89 eV and a tolerance factor ranging from 0.80 to 1.00. First-principles simulations demonstrate that the C3N2H5+ cation exhibits superior stability compared to alternative cations, enabling successful incorporation into three-dimensional halide perovskites. The cubic (C3N2H5)1−x(NH4)xMI3 (M = Sn, Pb) perovskites display excellent dynamic stability, a direct bandgap of 1.19–1.43 eV, s-p and p–p transitions, carrier effective masses ≤0.36 me, exciton binding energies ≤68.77 meV, and a remarkable power conversion efficiency of 33.04−33.72%. Furthermore, their Landau levels were evaluated under varying applied magnetic fields, demonstrating their potential for advanced optoelectronic applications. These findings suggest that (C3N2H5)1-x(NH4)xMI3 superalkali perovskites are highly promising candidates for use as photovoltaic materials.","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 8","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene-Enhanced Performance in Bulk Heterojunction Solar Cells: A Study on Optical and Impedance Properties 石墨烯增强体异质结太阳能电池的性能：光学和阻抗特性的研究

IF 6 3区工程技术

Solar RRL Pub Date : 2025-03-30 DOI: 10.1002/solr.202400912

Pınar Oruç, Haluk Koralay

{"title":"Graphene-Enhanced Performance in Bulk Heterojunction Solar Cells: A Study on Optical and Impedance Properties","authors":"Pınar Oruç, Haluk Koralay","doi":"10.1002/solr.202400912","DOIUrl":"https://doi.org/10.1002/solr.202400912","url":null,"abstract":"As global energy demands continue to rise, solar energy has emerged as one of the most promising alternative sources, drawing essential attention in scientific research. In particular, our study sought to explore whether the introduction of graphene could provide significant enhancements to the performance of solar cells. Within the experiment, poly(3-hexylthiophene) (P3HT) was used as the donor material, while [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM or PCBM) served as the acceptor in the active layer of the solar cell. Graphene was substituted for PC61BM to evaluate its effect on solar cell efficiency. Bulk heterojunction (BHJ) solar cells with the FTO/TiO2/P3HT:PC61BM1–x:Grx/MoO3/Ag architecture were fabricated using spray and spin coating methods for x = 0, 0.01, 0.02, 0.03, 0.05, and 0.10. The power conversion efficiencies of the reference device (where x = 0 for Gr) and the device containing a graphene ratio of x = 0.10 were measured at 1.69% and 3.75%, respectively. This shows a substantial 2.2-fold increase in efficiency with the incorporation of graphene into the system. Based on these findings, it is evident that graphene doping substantially improves the photovoltaic properties of the solar cells examined in this study, underscoring its potential in advancing solar cell technology.","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 8","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202400912","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measurement of Contact Resistivity In Symmetric Polycrystalline Si/SiOx/Monocrystalline Si Test Structures Using Variable Light Illumination 可变光照下对称多晶硅/SiOx/单晶硅测试结构接触电阻率的测量

IF 6 3区工程技术

Solar RRL Pub Date : 2025-03-27 DOI: 10.1002/solr.202400877

Dirk W. Steyn, William Nemeth, Matthew Page, San Theingi, David L. Young, Sumit Agarwal, Paul Stradins

{"title":"Measurement of Contact Resistivity In Symmetric Polycrystalline Si/SiOx/Monocrystalline Si Test Structures Using Variable Light Illumination","authors":"Dirk W. Steyn, William Nemeth, Matthew Page, San Theingi, David L. Young, Sumit Agarwal, Paul Stradins","doi":"10.1002/solr.202400877","DOIUrl":"https://doi.org/10.1002/solr.202400877","url":null,"abstract":"While different methods exist to determine the contact resistivity in semiconductor devices, these methods are limited to measurement of the majority carrier contacts. The measurement of p- or n-type contacts on n- or p-type crystalline silicon, respectively, is challenging due to the blocking diode formed by the p–n junction. In this article, we address this problem for tunneling oxide passivating contacts used in high-efficiency Si solar cells. We propose a universal method to extract contact resistivity on symmetric test structures with polycrystalline silicon on SiOx (poly-Si/SiOx) passivating contacts under illumination, both for p–n and high–low-junction passivated contacts. In this method, we demonstrate that the total contact resistance of each cell grid finger to the base wafer is governed by its effective contact area, defined by the transfer length extending from both sides of the finger. Therefore, the grid contact resistance of a poly-Si contact depends on the ratio of the doped poly-Si sheet resistance to the tunneling contact resistivity.","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 8","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/solr.202400877","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143866005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Photothermal Tandem Catalysis of CH4 Reforming and Fischer-Tropsch Synthesis to Produce Syngas and C2+ Hydrocarbons CH4重整与费托合成合成合成气及C2+烃的光热串联催化研究

IF 6 3区工程技术

Solar RRL Pub Date : 2025-03-26 DOI: 10.1002/solr.202500021

Hamada A. El-Naggar, Hisashi Asanuma, Hisao Yoshida, Akira Yamamoto

{"title":"Photothermal Tandem Catalysis of CH4 Reforming and Fischer-Tropsch Synthesis to Produce Syngas and C2+ Hydrocarbons","authors":"Hamada A. El-Naggar, Hisashi Asanuma, Hisao Yoshida, Akira Yamamoto","doi":"10.1002/solr.202500021","DOIUrl":"https://doi.org/10.1002/solr.202500021","url":null,"abstract":"Photothermal catalysis is a promising approach for converting renewable solar energy to storable chemical energy. However, a critical challenge in photothermal catalysis lies in the temperature gradients formed under irradiation within the catalyst bed. In the present study, this temperature gradient is utilized to promote tandem reactions of the highly endothermic CH4 reforming at the high-temperature zone to produce syngas and the exothermic Fischer-Tropsch synthesis (FTS) at the low-temperature zone to yield C2+ hydrocarbons. This study demonstrates that C2+ hydrocarbons such as ethane and ethylene are formed using a single photoreactor with a temperature gradient from CO2 and CH4 as carbon sources via the tandem reactions over SiO2-encapsulated Co–Ni alloy catalysts. Almost no C2+ formation under uniform temperature conditions in an electric furnace highlights the essential role of the temperature gradient in C2+ formation. Moreover, this study reveals that the fabrication of the porous SiO2 shell and the addition of steam into the feed gas have a crucial impact on the C2+ formation rate. This work may open new avenues for tandem reaction systems from two greenhouse gases of CO2 and CH4 into value-added C2+ hydrocarbons.","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 8","pages":""},"PeriodicalIF":6.0,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143865770","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A Sustainable Hydrogel-Based Dye-Sensitized Solar Cell Coupled to an Integrated Supercapacitor for Direct Indoor Light-Energy Storage 可持续性水凝胶染料敏化太阳能电池与集成超级电容器耦合用于直接室内光能存储

IF 6 3区工程技术

Solar RRL Pub Date : 2025-03-24 DOI: 10.1002/solr.202570061

Sara Domenici, Roberto Speranza, Federico Bella, Andrea Lamberti, Teresa Gatti

引用次数: 0

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