水解氧化-溶胶-凝胶法提高钙钛矿太阳能电池中SnO2电子传输层性能
Improved extraction performance of SnO2 ETL for perovskite solar cells by a combined hydrolysis oxidation and sol-gel method
赵航 1程泽通 1吕宽心 1陈立泽 2杨育运 3黄兴 1李珍珍1
作者信息
- 1. 华北理工大学 冶金与能源学院,唐山 063210
- 2. 市政工程设计研究院研究监测处,长春 130000
- 3. 市政设施维护管理中心,长春 130000
- 折叠
摘要
SnO2由于其高电子迁移率、优良的传导性和低温制备特性,在钙钛矿太阳能电池(PSCs)中得到广泛的应用.目前,制备SnO2最常用的两种方法是SnCl2水解氧化法和SnO2溶胶-凝胶法.然而,SnCl2水解氧化虽然可以产生结晶良好的SnO2,但其可控性较差,使得器件性能的重复性较低.另一方面,溶胶-凝胶法制备的基于SnO2电子输运层的器件具有良好的重复性,但结晶度较差,导致电子输运性能下降.在本文中,采用水解氧化和溶胶-凝胶相结合的方法制备了 SnO2电子传输层.研究结果表明:采用SnC12水解氧化法制备高质量的SnO2结晶层可以作为预生长模板,提高溶胶-凝胶法制备SnO2的结晶质量.此外,用溶胶-凝胶法制备的SnO2结晶层覆盖水解氧化SnO2层可以提高器件制备的重复性.由此方法制备的电子传递层可以有效地提高薄膜晶体的生长质量和电荷的提取能力,最终有助于提高器件的效率及稳定性并减少迟滞.
Abstract
SnO2 is widely used in perovskite solar cells(PSCs)due to its high electron mobility,suitable conduction band and low-temperature preparation characteristics.Currently,the two most commonly used methods for preparing SnO2 are SnCl2 hydrolysis oxidation or SnO2 sol-gel preparation.However,although SnCl2 hydrolysis oxidation can produce well-crystallized SnO2,its controllability is poor,resulting in low device performance repeat-ability.On the other hand,the devices based on SnO2 electronic transport layer prepared by the sol-gel method have good repeatability,but usually have poor crystallinity,leading to a decrease in electron transport performance.In this study,a combination of hydrolysis oxidation and sol-gel methods was used to prepare SnO2 electronic transport layers.The results of the study demonstrate that using SnCl2 hydrolysis oxidation to prepare high-quality SnO2 crystalline layers can serve as a pre-growth template to improve the crystalline quality of sol-gel generated SnO2.Additionally,covering the hydrolysis oxidation-based SnO2 layer with sol-gel prepared SnO2 crystalline layer can improves the repeatability of device preparation.The electron transport layers prepared by this method can effectively enhance the quality of thin film crystal growth and charge extraction capability,ultimately contributing to improving the efficiency,stability,and reducing hysteresis of the devices.
关键词
SnO2/复合电子传输层/水解氧化/溶胶-凝胶法/杂化钙钛矿太阳能电池Key words
SnO2/composite electron transport layer/hydrolysis oxidation/sol-gel method/hybrid PSCs引用本文复制引用
基金项目
国家自然科学基金(52102247)
河北省自然科学基金(F2022209010)
唐山市科技计划项目(21130207C)
出版年
2024
NETL
NSTL
万方数据