反应等离子体沉积二氧化锡电子传输层及其在钙钛矿太阳电池中的应用  

Electron transport layer of tin dioxide deposited by reactive plasma and its application in perovskite solar cells

作　　者：韩晓静 杨静 张佳莉[2,3,4,5,6] 刘冬雪 石标[2,3,4,5,6] 王鹏阳 赵颖 张晓丹 Han Xiao-Jing;Yang Jing;Zhang Jia-Li;Liu Dong-Xue;Shi Biao;Wang Peng-Yang;Zhao Ying;Zhang Xiao-Dan(Institute of Science and Technology,China Three Gorges Corporation,Beijing 100038,China;Solar Energy Conversion Center,Institute of Photoelectronic Thin Film Devices and Technology,Nankai University,Tianjin 300350,China;Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin,Tianjin 300350,China;Engineering Research Center of Thin Film Photoelectronic Technology of Ministry of Education,Tianjin 300350,China;Collaborative Innovation Center of Chemical Science and Engineering(Tianjin),Tianjin 300072,China;Renewable Energy Conversion and Storage Center,Nankai University,Tianjin 300072,China)

机构地区：[1]中国长江三峡集团有限公司,科学技术研究院,北京100038 [2]南开大学,光电子薄膜器件与技术研究所,太阳能转换中心,天津300350 [3]天津市光电子薄膜器件与技术重点实验室,天津300350 [4]薄膜光电子技术教育部工程研究中心,天津300350 [5]化学科学与工程协同创新中心,天津300072 [6]南开大学,可再生能源转换与储存中心,天津300072

出　　处：《物理学报》2023年第17期355-363,共9页Acta Physica Sinica

基　　金：中国长江三峡集团有限公司科研项目(批准号:202103571);国家自然科学基金(批准号:62274099);国家自然科学基金联合基金重点项目(批准号:U21A2072)资助的课题.

摘　　要：电子传输层对于钙钛矿太阳电池的光电转换效率和稳定性十分重要,二氧化锡是高效钙钛矿太阳电池中常见的电子传输层,具有良好的载流子提取和传输能力,但是基于溶液法制备二氧化锡在空气中高温退火时表面产生大量缺陷,降低薄膜的电学性能,而且溶液法不利于大面积制备.本文采用反应等离子体沉积法制备二氧化锡薄膜,通过调控辉光时间和工作电流优化薄膜性能,将其应用于小面积正式钙钛矿太阳电池中,实现了21.24%的效率.另外,通过引入异辛酸亚锡和二氧化锡结合作为双电子传输层改善器件的迟滞,电池开路电压从1.11 V提高到1.15 V,效率从21.27%提升至22.15%,迟滞因子从24.04%降低到3.69%.本工作开发了新的制备方法和有效的优化策略来制备二氧化锡电子传输层,推动了平面异质结钙钛矿太阳电池的发展,为制备高效、稳定的钙钛矿太阳电池提供了新的研究思路和方法.The electron transport layer is very important for the device efficiency and stability of perovskite solar cells.Tin dioxide is a common electron transport layer in high-efficiency solar cells and has good carrier extraction and transport capability.However,using the solution method to prepare tin dioxide,a large number of defects are generated on its surface during high-temperature annealing in air,which can degrade the electrical properties of the film,so the solution method is not conducive to preparing large-area film.In this paper,the reactive plasma deposition method is used to prepare tin dioxide thin film,and the performance of the thin film is optimized by adjusting the glow discharge time and working current.The film is applied to small-area N-I-P type perovskite solar cells,the efficiency reaching to 21.24%.The hysteresis of the device is improved by introducing stannous isooctanoate and tin dioxide as a double electron transport layer,the open circuit voltage of the solar cell increases from 1.11 to 1.15 V,the efficiency rises from 21.27% to 22.15%,and the hysteresis factor decreases from 24.04% to 3.69%.This work presents a new preparation method and effective optimization strategy to prepare tin dioxide electron transport layer,which will promote the development of planar heterojunction perovskite solar cells and provide a new research idea for preparing high-efficiency and stable perovskite solar cells.

关 键 词：反应等离子体沉积 二氧化锡电子传输层 钙钛矿太阳电池 迟滞 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TQ134.32[化学工程—无机化工] TB383.2[一般工业技术—材料科学与工程]