Space-confined vapor deposited molecular ferroelectric film for photovoltaic devices  

作　　者：Chen Wang Shan Cong Lingbo Xiao Chao-ran Huang Ruonan Wang Ruijie Li Lutao Li Guifu Zou Qiang Zhang 

机构地区：[1]College of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266590,China [2]College of Energy,Soochow Institute for Energy and Materials Innovations,and Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province,Soochow University,Suzhou 215000,China [3]Department of Applied Physics,Zhejiang University of Science and Technology,Hangzhou 310023,China [4]School of Advanced Energy,Sun Yat-sen University,Shenzhen 518107,China

出　　处：《Nano Research》2025年第3期611-618,共8页纳米研究(英文版)

基　　金：support from the National Natural Science Foundation of China(Nos.52325309,22488101,22405040,and 62005027);the National Key R&D Program of China(No.2024YFA1509300);GBRCE for Functional Molecular Engineering and Institute of Green Chemistry and Molecular Engineering,the Gusu Innovation and Entrepreneurship Leading Talent Program(No.ZXL2024383);the Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key Lab of Modern Optical Technologies of Ministry of Education,and the Natural Science Foundation of Jiangsu Province(No.BK20241267)。

摘　　要：Molecular ferroelectrics,characterized by outstanding photoelectric and unique ferroelectric properties,invigorate the field of ferroelectric photovoltaics.Nonetheless,the performance of molecular ferroelectric devices is hindered by fine grains resulting from poor high-temperature stability.In this work,we successfully achieved micron-grained molecular ferroelectric films by using the space-confined vapor deposited method.The optimized film exhibited a significant increase in grain size from the nanometer level(0.08μm)to the micrometer level(~2μm),leading to improved optoelectronic and ferroelectricity.Furthermore,it optimizes the energy level and enhances the photovoltaic performance of vertical devices.Research on the mechanism shows that high annealing temperature and inhibiting component loss play an important role in obtaining large grain films.This work provides new research ideas for improving the quality of molecular ferroelectric films and provides valuable reference for the fabrication of high performance molecular ferroelectric photovoltaic devices.

关 键 词：molecular ferroelectric large grain space confinement photovoltaic devices 

分 类 号：TB3[一般工业技术—材料科学与工程]