{"title":"Tantalum-Doped Tin Oxide Rear Reflector for Efficient and Low-Cost Silicon Heterojunction Solar Cells","authors":"Shuyi Chen, Jianhua Shi, Yuan Yao, Yunren Luo, Yue Yuan, Junlin Du, Qiang Shi, Guangyuan Wang, Anjun Han, Bin Chen, Liping Zhang, Wenzhu Liu, Zhengxin Liu, Fanying Meng","doi":"10.1002/solr.202400806","DOIUrl":null,"url":null,"abstract":"<p>Promoting infrared (IR) response is crucial to boost the short-circuit current density (<i>J</i><sub><i>SC</i></sub>) of thinner silicon heterojunction (SHJ) solar cells. Herein, tantalum-doped tin oxide (TaTO) film is not only a transparent conductive film but also used as rear reflector stacked with multiple-doped indium oxide (IMO) to promote the IR quantum efficiency of SHJ solar cells. Stack films (IMO/TaTO) are prepared and their structural and optical–electrical properties were studied. IMO/TaTO stack film is a layer of polycrystalline IMO film covered by amorphous TaTO film. Given the low surface roughness of amorphous film, the IMO/TaTO stack films show higher reflectance than single-IMO film in IR region. The carrier concentration of IMO/TaTO stack film is 1.06 × 10<sup>20</sup> cm<sup>−3</sup>, one third of IMO films, leading to low absorption loss in IR region. Therefore, a <i>J</i><sub><i>SC</i></sub> gain of 1.55%<sub>rel</sub> for industrial SHJ solar cells with rear IMO/TaTO films is acquired due to improvement of IR response. Finally, an average power conversion efficiency gain of 0.27%<sub>abs</sub> is come through, providing that stacks with less indium content in the rear side of SHJ solar cells is feasible to enhance the efficiency of SHJ solar cells.</p>","PeriodicalId":230,"journal":{"name":"Solar RRL","volume":"9 6","pages":""},"PeriodicalIF":6.0000,"publicationDate":"2025-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solar RRL","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/solr.202400806","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
Promoting infrared (IR) response is crucial to boost the short-circuit current density (JSC) of thinner silicon heterojunction (SHJ) solar cells. Herein, tantalum-doped tin oxide (TaTO) film is not only a transparent conductive film but also used as rear reflector stacked with multiple-doped indium oxide (IMO) to promote the IR quantum efficiency of SHJ solar cells. Stack films (IMO/TaTO) are prepared and their structural and optical–electrical properties were studied. IMO/TaTO stack film is a layer of polycrystalline IMO film covered by amorphous TaTO film. Given the low surface roughness of amorphous film, the IMO/TaTO stack films show higher reflectance than single-IMO film in IR region. The carrier concentration of IMO/TaTO stack film is 1.06 × 1020 cm−3, one third of IMO films, leading to low absorption loss in IR region. Therefore, a JSC gain of 1.55%rel for industrial SHJ solar cells with rear IMO/TaTO films is acquired due to improvement of IR response. Finally, an average power conversion efficiency gain of 0.27%abs is come through, providing that stacks with less indium content in the rear side of SHJ solar cells is feasible to enhance the efficiency of SHJ solar cells.
Solar RRLPhysics and Astronomy-Atomic and Molecular Physics, and Optics
CiteScore
12.10
自引率
6.30%
发文量
460
期刊介绍:
Solar RRL, formerly known as Rapid Research Letters, has evolved to embrace a broader and more encompassing format. We publish Research Articles and Reviews covering all facets of solar energy conversion. This includes, but is not limited to, photovoltaics and solar cells (both established and emerging systems), as well as the development, characterization, and optimization of materials and devices. Additionally, we cover topics such as photovoltaic modules and systems, their installation and deployment, photocatalysis, solar fuels, photothermal and photoelectrochemical solar energy conversion, energy distribution, grid issues, and other relevant aspects. Join us in exploring the latest advancements in solar energy conversion research.