Wang Kun, Cheng Jiang, Yang Xin, Hu Rong, Fu Lijuan, Huang Jiang, Yu Junsheng, Li Lu
State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Science and Engineering, University of Electronic Science and Technology of China (UESTC), Chengdu, 610054, People's Republic of China.
Co-Innovation Center for Micro/Nano Optoelectronic Materials and Devices, Research Institute for New Materials and Technology, Chongqing University of Arts and Sciences, Chongqing, 402160, People's Republic of China.
Nanoscale Res Lett. 2018 Sep 6;13(1):270. doi: 10.1186/s11671-018-2651-x.
Poor thermostability of SbS in vacuum hinders the possibility of achieving high-quality crystalline films. In order to enhance the photovoltaic properties of SbS planar heterojunction solar cells, a selenylation-based post-treatment approach has been employed. Selenylation performed over 15 min on the SbS film resulted in an enhancement in the conversion efficiency from ~ 0.01 to 2.20%. Effect of the selenylation on the evolution of morphology, crystal structure, composition distributions, and photovoltaic behavior has been investigated. The variation in the energy levels of SbS/CdS junction has been also been discussed. Results show that selenylation not only enhanced the crystallinity of SbS film but also provided a suitable energy level which facilitated charge transport from absorber to the buffer layer.
硫化锑（SbS）在真空中热稳定性较差，这阻碍了制备高质量晶体薄膜的可能性。为了提高SbS平面异质结太阳能电池的光伏性能，采用了基于硒化的后处理方法。在SbS薄膜上进行15分钟以上的硒化处理后，转换效率从约0.01%提高到了2.20%。研究了硒化对形貌演变、晶体结构、成分分布和光伏行为的影响。还讨论了SbS/CdS结能级的变化。结果表明，硒化不仅提高了SbS薄膜的结晶度，还提供了合适的能级，有利于电荷从吸收层传输到缓冲层。
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