钙钛矿太阳能电池中的二氧化锡电子传输层调控
Regulation of SnO2 Electron Transport Layers for Perovskite Solar Cells
崔玉鹏 1弓爵 1刘明侦1
作者信息
- 1. 电子科技大学材料与能源学院,四川成都611731
- 折叠
摘要
作为平面异质结钙钛矿太阳能电池(PSCs)的重要组成部分,电子传输层(ETL)在提升PSCs器件的性能和稳定性上起着重要的作用.尽管最常用的两类ETL材料——二氧化钛(TiO2)和二氧化锡(SnO2),均以纳米颗粒和溶液方式制备,TiO2却面临着电子迁移率低、器件滞回效应大、化学稳定性差、需高温制备等问题,相比之下,SnO2具有优异的光电学性质、更高的稳定性、可低温制备等优势.聚焦于基于SnO2 ETL的PSCs稳定性和界面电荷提取,首先综述了 SnO2材料的物理性质和优点;然后从制备和成膜方法(如化学浴沉积、溶液旋涂等)入手,进一步阐明了 SnO2的体相和表面缺陷;最后基于SnO2 ETL的缺陷,从界面钝化、体相掺杂和双电子层构筑等三方面重点介绍了提升PSCs稳定性和界面载流子提取效率的途径.该综述可助力PSCs性能和稳定性的进一步提升,为该新兴光伏技术进一步实用化贡献有用的见解.
Abstract
Being an important part of planar heterojunction perovskite solar cells(PSCs),electron transport layer(ETL)plays important roles in enhancing the photovoltaic performance and stability of PSCs.Despite the two most commonly used ETL materials,titanium dioxide(TiO2)and tin oxide(SnO2)all being nanoparticles and fabricated through solution method,TiO2 suffers from low electron mobility,large device hysteresis,weak chemical stability and high-temperature processing.By comparison,SnO2 owns the advantages of excellent optoelectronic properties,greater stability because of its chemical inertness and low-temperature processability.We focus on the stability and interfacial charge extraction in PSCs based on SnO2 ETL.First,physical properties and advantages of SnO2 are reviewed.Then,starting from the preparation and film formation methods of SnO2(e.g.chemical bath deposition,solution spin-coating,etc.),we further discuss the bulk and surface defects of SnO2.Finally,targeting the defect profiles of SnO2 ETL,we emphasize regulatory approaches to enhance the device stability and carrier extraction in PSCs based on interfacial passivation,bulk doping and double-ETL structures.This review article contributes to the further advancements of device performance and stability of PSCs,and provides insights for the practical application of this emerging photovoltaic technology.
关键词
钙钛矿太阳能电池/二氧化锡电子传输层/运作稳定性/界面调控/载流子提取Key words
perovskite solar cells/SnO2 electron transport layer/operational stability/interfacial modification/carrier extraction引用本文复制引用
基金项目
国家自然科学基金-青年基金(52202216)
国家自然科学基金-面上项目(62274026)
四川省自然科学基金-青年科学基金项目(2023NSFSC0962)
出版年
2024
NETL
NSTL
万方数据