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Sb2S3 Seed-Mediated Growth of Low-Defect Sb2S3 on a TiO2 Substrate for Efficient Solar Cells
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-12-07 , DOI: 10.1021/acsaem.0c02400 Lijian Zhang 1 , Weitao Lian 1 , Xiangchun Zhao 1 , Yiwei Yin 1 , Tao Chen 1 , Changfei Zhu 1
ACS Applied Energy Materials ( IF 5.4 ) Pub Date : 2020-12-07 , DOI: 10.1021/acsaem.0c02400 Lijian Zhang 1 , Weitao Lian 1 , Xiangchun Zhao 1 , Yiwei Yin 1 , Tao Chen 1 , Changfei Zhu 1
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Hydrothermal deposition was recently developed to prepare an antimony selenosulfide thin film with large grain size and flat and compact surface morphology, leading to efficient breakthrough in solar cell applications. However, the deposition of antimony chalcogenide is always based on the CdS substrate. The narrow band gap of CdS generates parasitic absorption that causes light harvesting loss in the solar device. TiO2 with a wide band gap allows more efficient light harvesting, while its deposition on high-quality antimony chalcogenide films has not been realized. Here, we demonstrate that the Sb2S3 seed layer introduced on the TiO2 surface can initiate the deposition of Sb2S3. The Sb2S3 seed layer provides crystal nuclei for the hydrothermal growth of a highly dense and compact Sb2S3 film on the TiO2 substrate. This kind of Sb2S3 film exhibits reduced defect density and improved charge-carrier transport compared with that deposited on a bare TiO2 surface, finally leading to an efficiency improvement of 32%. This method provides an effective strategy for depositing Sb2S3 on wide band gap oxide substrates in the hydrothermal deposition system for optoelectronic device applications.
中文翻译：
在高效太阳能电池的TiO 2衬底上Sb 2 S 3种子介导的低缺陷Sb 2 S 3的生长
最近开发了水热沉积以制备具有大晶粒尺寸和平坦紧凑的表面形态的硒化硒锑薄膜，从而导致在太阳能电池应用中的有效突破。但是，锑硫属元素化物的沉积始终基于CdS衬底。CdS的窄带隙会产生寄生吸收，从而导致太阳能设备中的光收集损失。具有宽禁带宽度的TiO 2可以更有效地收集光，而尚未实现在高质量锑硫属化物薄膜上的沉积。在这里，我们证明了在TiO 2表面上引入的Sb 2 S 3种子层可以引发Sb 2 S 3的沉积。。Sb 2 S 3晶种层为TiO 2衬底上的高密度致密Sb 2 S 3膜的水热生长提供晶核。与沉积在裸露的TiO 2表面上的薄膜相比，这种Sb 2 S 3薄膜具有降低的缺陷密度和改善的载流子传输能力，最终使效率提高了32％。该方法提供了一种有效的策略，用于在光热沉积系统中将Sb 2 S 3沉积在宽带隙氧化物衬底上，以用于光电器件应用。
更新日期：2020-12-28
中文翻译：
在高效太阳能电池的TiO 2衬底上Sb 2 S 3种子介导的低缺陷Sb 2 S 3的生长
最近开发了水热沉积以制备具有大晶粒尺寸和平坦紧凑的表面形态的硒化硒锑薄膜，从而导致在太阳能电池应用中的有效突破。但是，锑硫属元素化物的沉积始终基于CdS衬底。CdS的窄带隙会产生寄生吸收，从而导致太阳能设备中的光收集损失。具有宽禁带宽度的TiO 2可以更有效地收集光，而尚未实现在高质量锑硫属化物薄膜上的沉积。在这里，我们证明了在TiO 2表面上引入的Sb 2 S 3种子层可以引发Sb 2 S 3的沉积。。Sb 2 S 3晶种层为TiO 2衬底上的高密度致密Sb 2 S 3膜的水热生长提供晶核。与沉积在裸露的TiO 2表面上的薄膜相比，这种Sb 2 S 3薄膜具有降低的缺陷密度和改善的载流子传输能力，最终使效率提高了32％。该方法提供了一种有效的策略，用于在光热沉积系统中将Sb 2 S 3沉积在宽带隙氧化物衬底上，以用于光电器件应用。
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