Journal
SUSTAINABLE ENERGY & FUELS
Volume 5, Issue 23, Pages 6059-6065Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1se01279g
Keywords
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Funding
- National Natural Science Foundation of China [61704154]
- Natural Science Foundation of Zhejiang Province [LY20F040006, LQ18A040005, LY19F040009]
- Fundamental Research Funds of Zhejiang Sci-Tech University [2019Q069]
- Science Foundation of Zhejiang Sci-Tech University [15062021-Y]
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Introducing thiosemicarbazide (TSC) as a multifunctional additive improves the properties of SnO2 ETLs, enhancing conductivity and wettability while facilitating perovskite film crystallization. This leads to a significant increase in power conversion efficiency and improved stability in PSCs based on TSC-complexed SnO2 ETLs.
High-quality electron transport layers (ETLs) are a crucial component of high-performance perovskite solar cells (PSCs) with the n-i-p configuration. Herein, a facile and effective way to improve the properties of SnO2 ETLs is developed via introducing thiosemicarbazide (TSC) as a multifunctional additive. Due to the interaction between TSC and SnO2 nanocrystals, the oxygen vacancies in SnO2 could be effectively passivated, increasing the conductivity of SnO2 ETLs. Moreover, the morphology of SnO2 ETLs is improved and the wettability is also increased with TSC introduction, facilitating crystallization of perovskite films. Consequently, the PSCs based on TSC-complexed SnO2 ETLs achieved a significant increase of power conversion efficiency with much reduced hysteresis and increased stability.
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