极化子
材料科学
钙钛矿(结构)
兴奋剂
能量转换效率
掺杂剂
光电子学
光伏系统
电子迁移率
活动层
热稳定性
图层(电子)
纳米技术
化学工程
电子
电气工程
工程类
物理
薄膜晶体管
量子力学
作者
Narges Yaghoobi Nia,Mahmoud Zendehdel,Mojtaba Abdi‐Jalebi,Luigi Angelo Castriotta,Felix Utama Kosasih,Enrico Lamanna,Mohammad Mahdi Abolhasani,Zhaoxiang Zheng,Zahra Andaji‐Garmaroudi,Kamal Asadi,Giorgio Divitini,Caterina Ducati,Richard H. Friend,Aldo Di Carlo
出处
期刊:Nano Energy
[Elsevier]
日期:2021-04-01
卷期号:82: 105685-105685
被引量:39
标识
DOI:10.1016/j.nanoen.2020.105685
摘要
Operational stability of perovskite solar cells (PSCs) is rapidly becoming one of the pressing bottlenecks for their upscaling and integration of such promising photovoltaic technology. Instability of the hole transport layer (HTL) has been considered as one of the potential origins of short life-time of the PSCs. In this work, by varying the molecular weight (MW) of doped poly(triarylamine)(PTAA) HTL, we improved by one order of magnitude the charge mobility inside the HTL and the charge transfer at the perovskite/HTL interface. We demonstrate that this occurs via the enhancement of polaron delocalization on the polymeric chains through the combined effect of doping strategy and MW tuning. By using high MW PTAA doped combining three different dopant, we demonstrate stable PSCs with typical power conversion efficiencies above 20%, retain more than 90% of the initial efficiency after 1080 h thermal stress at 85 °C and 87% of initial efficiency after 160 h exposure against 1 sun light soaking. By using this doping-MW strategy, we realized perovskite solar modules with an efficiency of 17% on an active area of 43 cm2, keeping above 90% of the initial efficiency after 800 h thermal stress at 85 °C. These results, obtained in ambient conditions, pave the way toward the industrialization of PSC-based photovoltaic technology.
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