电子传输层表界面工程对钙钛矿薄膜结晶行为的影响

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中图分类号：TM914.4；TB302 文献标志码：A 文章编号： 1000-5013（2025）06-0613-12

Influence of Electron Transport Layer Interface Engineering on Crystallization Behavior of Perovskite Films

WANG Ying，WU Jihuai

（College of Materials Science and Engineering，Huaqiao University，Xiamen 361o21，China）

Abstract：The photovoltaic performanceand stability of perovskite solar celsare highly dependent on the structure and properties of the perovskite active layer.By regulating the electron transport layer/perovskite active layer（ETL/PVK） heterojunction interface，the nucleation thermodynamics and kinetics，as wellas crystallization behavior，grain orientation，and microstructure of perovskite films are influenced.This review systematically examines how the surface properties of ETL （including surface energy，wettability，functional groups，and lattice matching）guide the evolution of perovskite from solution precursors to solid phase according to interfacial physicochemistry. The three main mechanisms of the ETL regulating perovskite crystallzation are discussed： Controlling the nucleation barrier through interface energy to affect nucleation density; Guiding crystal growth direction through surface functional group； Inducing preferred orientation formation through interface coupling effect. Further analysis is conducted on the impact of the resulting crystallgraphic features （grain size，orientation，grain boundary properties）on charge transport，ion migration，and device stability. This review aims to deepen the understanding of the scientific essence of ETL/PVK interface and provide a theoretical support for the preparation of high-quality perovskite films.

Keywords：perovskite solar cells； electron transport layer； perovskite active layer; interface engineering; perovskite crystallization

钙钛矿太阳能电池的革命性进展使其在短短十几年内光电转换效率突破 27%[1] ，逼近晶硅太阳能电池的水平。（剩余22951字）