Constructing Efficient and Stable Perovskite Solar Cells by Adjusting Atomic-layer-deposited SnO<italic style="font-style: italic"><sub>x</sub></italic> Layer <italic style="font-style: italic">via</italic> Oxygen Sources

XIE Yi; WU Shaohang; GAO Yanyan; LIU Yaqing; GUO Rilang; MAI Yaohua

doi:10.37188/CJL.20220325

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Constructing Efficient and Stable Perovskite Solar Cells by Adjusting Atomic-layer-deposited SnO_x Layer via Oxygen Sources

Device Fabrication and Physics | 更新时间：2023-03-13

- Constructing Efficient and Stable Perovskite Solar Cells by Adjusting Atomic-layer-deposited SnO_x Layer via Oxygen Sources
  增强出版
- Chinese Journal of Luminescence Vol. 44, Issue 2, Pages: 337-345(2023)
- 作者机构：
  
  1.暨南大学信息科学技术学院，新能源技术研究院，广东广州　510632
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(62005099);Guangdong Basic and Applied Basic Research Fund （Key project of Guangdong-Foshan Joint Fund）(2021B1515120003)
- DOI：10.37188/CJL.20220325
  CLC：
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XIE Yi, WU Shaohang, GAO Yanyan, et al. Constructing Efficient and Stable Perovskite Solar Cells by Adjusting Atomic-layer-deposited SnO_x Layer via Oxygen Sources. [J]. Chinese Journal of Luminescence 44(2):337-345(2023)
DOI：

XIE Yi, WU Shaohang, GAO Yanyan, et al. Constructing Efficient and Stable Perovskite Solar Cells by Adjusting Atomic-layer-deposited SnO_x Layer via Oxygen Sources. [J]. Chinese Journal of Luminescence 44(2):337-345(2023) DOI： 10.37188/CJL.20220325.

摘要

原子层沉积的SnO,x,薄膜具有良好的均匀性和致密性，常被用于提升倒置平面结构钙钛矿太阳能电池的稳定性。而SnO,x,薄膜的特性对器件能量转换效率（Power conversion efficiency，PCE）有着重要影响。本文通过氧源（H,2,O、O,3,）调控SnO,x,薄膜的能级和导电性，提升器件PCE。结果表明，O,3,作为单一氧源的SnO,x,薄膜（记为O,3,‐SnO,x,）具有较优的能级排列；而只有H,2,O作氧源的SnO,x,薄膜（记为H,2,O‐SnO,x,）具有较高的电导率。而采用O,3,和H,2,O混合氧源制备的SnO,x,（记为MIX‐SnO,x,），则兼顾了能级匹配和良好的导电性，有效提升器件的PCE，达到20.9%。不仅如此，得益于SnO,x,薄膜的致密结构，有效避免了外部水氧的入侵和内部材料的分解流失，从而提升了器件稳定性，在85 ℃（氮气气氛）下老化超过646 h仍能维持初始PCE的86%以上。

Abstract

SnO,x, deposited by atomic layer deposition exhibits uniform and dense nature， which is commonly used to improve the stability of inverted planar perovskite solar cells. Meanwhile， the characteristics of SnO,x, films have an essential impact on power conversion efficiency（PCE） of devices. In this paper， the characteristics of atomic-layer-deposited SnO,x, are adjusted by the oxygen sources（H,2,O， O,3,）， including energy level and conductivity， so as to achieve the improvement of PCE of devices. The results show that the SnO,x, film with O,3, as a single oxygen source has good energy level alignment. SnO,x,， which only has water as an oxygen source （denoted H,2,O-SnO,x,）， performs higher electrical conductivity. While， taking advantage of mentioned sources， the SnO,x, （denoted as MIX-SnO,x,） not only obtains good energy level alignment， but also excellent conductivity， which effectively improves the PCE of the devices， reaching 20.9%. Moreover， thanks to the denseness of SnO,x, film， it can largely prevent the ingress of moisture into devices， and also inhibit the decomposition of perovskite， dramatically enhancing the stability of perovskite solar cells， which can retain 86% of initial PCE after aging at 85 ℃ （nitrogen atmosphere） for more than 646 h.

关键词

钙钛矿太阳能电池原子层沉积氧源调控SnOx

Keywords

perovskite solar cellsatomic layer depositionoxygen resources adjustmentSnOx

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Constructing Efficient and Stable Perovskite Solar Cells by Adjusting Atomic-layer-deposited SnOx Layer via Oxygen Sources

DOI：10.37188/CJL.20220325

摘要

Abstract

关键词

Keywords

references

Constructing Efficient and Stable Perovskite Solar Cells by Adjusting Atomic-layer-deposited SnO_x Layer via Oxygen Sources