Yin Yiwei, Jiang Chenhui, Ma Yuyuan, Tang Rongfeng, Wang Xiaomin, Zhang Lijian, Li Zhiqiang, Zhu Changfei, Chen Tao
Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Materials for Energy Conversion, Department of Materials Science and Engineering, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, 230026, China.
Institute of Energy, Hefei Comprehensive National Science Center, Hefei, China.
Adv Mater. 2021 Mar;33(11):e2006689. doi: 10.1002/adma.202006689. Epub 2021 Feb 10.
Antimony selenosulfide (Sb (S,Se) ) is an emerging low-cost, nontoxic solar material with suitable bandgap and high absorption coefficient. Developing effective methods for fabricating high-quality films would benefit the device efficiency improvement and deepen the fundamental understanding on the optoelectronic properties. Herein, equipment is developed that allows online introduction of precursor vapor during the reaction process, enabling sequential coevaporation of Sb Se and S powders for the deposition of Sb (S,Se) thin films. With this unique ability, it is revealed that the deposition sequence manipulates both the interfacial properties and optoelectronic properties of the absorber film. A power conversion efficiency of 8.0% is achieved, which is the largest value in vapor-deposition-derived Sb (S,Se) solar cells. The research demonstrates that multi-source sequential coevaporation is an efficient technique to fabricate high-efficiency Sb (S,Se) solar cells.
硒硫化锑（Sb (S,Se) ）是一种新兴的低成本、无毒的太阳能材料，具有合适的带隙和高吸收系数。开发制造高质量薄膜的有效方法将有助于提高器件效率，并加深对其光电特性的基本理解。在此，开发了一种设备，该设备允许在反应过程中在线引入前驱体蒸汽，从而实现Sb Se和S粉末的顺序共蒸发，以沉积Sb (S,Se) 薄膜。凭借这种独特的能力，研究发现沉积顺序会影响吸收层薄膜的界面特性和光电特性。实现了8.0%的功率转换效率，这是气相沉积法制备的Sb (S,Se) 太阳能电池中的最高值。该研究表明，多源顺序共蒸发是制造高效Sb (S,Se) 太阳能电池的一种有效技术。
