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Thin-Film Solar Cells using a Selenized Silver Antimony Sulfide Absorber Prepared by Spray Pyrolysis Deposition
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2021-01-22 , DOI: 10.1002/pssr.202000514 Fan Xie 1, 2 , Hua Tang 2 , Xin Zhao 3 , Meng Li 3 , Lu Li 2 , Jiang Cheng 2
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2021-01-22 , DOI: 10.1002/pssr.202000514 Fan Xie 1, 2 , Hua Tang 2 , Xin Zhao 3 , Meng Li 3 , Lu Li 2 , Jiang Cheng 2
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Silver antimony sulfide (AgSbS2) has attracted great interest as a photovoltaic absorber, attributed to its suitable energy gap, large absorption coefficient, and being of relatively earth-abundant elements. However, the applications of AgSbS2 are very limited due to the immaturity of the fabrication technology. A novel spray pyrolysis method for AgSbS2 film deposition is reported. Selenization is the most important step to improve the device performance. The composition analysis shows that the S element in AgSbS2 can be partly substituted by Se via heating the sample in Se vapor at 400 °C for several minutes. X-ray diffraction shows that the selenized film contains AgSbS2, AgSbSe2, and AgSbS2−xSex without other impurities. The Hall effect confirms a carrier concentration of 3.31 × 1018 cm−3, which is significantly higher than that of the untreated film and those processed in other atmospheres. The optical measurement indicates that the optical absorbance of the selenized AgSbS2 is tremendously improved. In addition, a cascade-type energy level with the bandgap varying from 1.15 eV at the surface to 1.68 eV into the bulk is formed, resulting in an ideal energy level matching. Because of these beneficial factors, the efficiency improves significantly from 0.27% to 1.30%.
中文翻译：
使用喷雾热解沉积制备的硒化银硫化锑吸收剂的薄膜太阳能电池
硫化锑银（AgSbS 2）作为光伏吸收体引起了极大的兴趣，这归因于其合适的能隙、大的吸收系数以及相对地球上丰富的元素。然而，由于制造技术的不成熟，AgSbS 2的应用非常有限。报道了一种用于 AgSbS 2薄膜沉积的新型喷雾热解方法。硒化是提高器件性能的最重要步骤。成分分析表明，通过将样品在 Se 蒸气中在 400 °C 下加热几分钟，AgSbS 2中的 S 元素可以被 Se 部分取代。X射线衍射表明硒化膜含有AgSbS 2、AgSbSe 2, 和 AgSbS 2- x Se x不含其他杂质。霍尔效应证实载流子浓度为 3.31 × 10 18 cm -3，明显高于未处理膜和在其他气氛中处理的膜。光学测量表明，硒化的AgSbS 2 的吸光度得到了极大的提高。此外，形成了带隙从表面的 1.15 eV 到主体的 1.68 eV 的级联型能级，从而实现了理想的能级匹配。由于这些有利因素，效率从 0.27% 显着提高到 1.30%。
更新日期：2021-01-22
中文翻译：
使用喷雾热解沉积制备的硒化银硫化锑吸收剂的薄膜太阳能电池
硫化锑银（AgSbS 2）作为光伏吸收体引起了极大的兴趣，这归因于其合适的能隙、大的吸收系数以及相对地球上丰富的元素。然而，由于制造技术的不成熟，AgSbS 2的应用非常有限。报道了一种用于 AgSbS 2薄膜沉积的新型喷雾热解方法。硒化是提高器件性能的最重要步骤。成分分析表明，通过将样品在 Se 蒸气中在 400 °C 下加热几分钟，AgSbS 2中的 S 元素可以被 Se 部分取代。X射线衍射表明硒化膜含有AgSbS 2、AgSbSe 2, 和 AgSbS 2- x Se x不含其他杂质。霍尔效应证实载流子浓度为 3.31 × 10 18 cm -3，明显高于未处理膜和在其他气氛中处理的膜。光学测量表明，硒化的AgSbS 2 的吸光度得到了极大的提高。此外，形成了带隙从表面的 1.15 eV 到主体的 1.68 eV 的级联型能级，从而实现了理想的能级匹配。由于这些有利因素，效率从 0.27% 显着提高到 1.30%。
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