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- Title
Efficient Copper‐Doped Antimony Sulfide Thin‐Film Solar Cells via Coevaporation Method.
- Authors
Ishaq, Muhammad; Deng, Hui; Farooq, Umar; Zhang, Huan; Yang, Xiaokun; Shah, Usman Ali; Song, Haisheng
- Abstract
Sb2S3 being a light‐absorbing material is used for photovoltaic (PV) application due to its superior stability and progressive power conversion efficiency (PCE) benefiting from its low cost, less toxic, earth‐abundant, and facile nature. Due to the difficulty in efficient doping for such 1D structure, the performance of as‐fabricated thin‐film solar cells is limited by high resistivity and hole extraction barrier. Herein, a coevaporation scheme is introduced for copper‐doped Sb2S3 by rapid thermal evaporation (RTE). The Cu‐doped Sb2S3 thin film discloses the enhanced crystallinity with a grain diameter greater than 1 µm and conductivity along with improved carrier concentration. At the same time, the deep valance band obtains a minor upshift, favoring the hole extraction at back contact. Consequently, all the PV parameters are enhanced leading to the PCE boosting from 4.18% to 4.61%. Herein, a facile doping technique is demonstrated to improve its performance without any modification of the present RTE method.
- Subjects
SOLAR cells; SILICON solar cells; ANTIMONY; VALENCE bands; CARRIER density; SULFIDES
- Publication
Solar RRL, 2019, Vol 3, Issue 12, pN.PAG
- ISSN
2367-198X
- Publication type
Article
- DOI
10.1002/solr.201900305