High-Performance Perovskite Quantum Dot Solar Cells Enabled by Incorporation with Dimensionally Engineered Organic Semiconductor

作     者：Seyeong Lim Dae Hwan Lee Hyuntae Choi Yelim Choi Dong Geon Lee Sung Beom Cho Seonkyung Ko Jongmin Choi Younghoon Kim Taiho Park Seyeong Lim;Dae Hwan Lee;Hyuntae Choi;Yelim Choi;Dong Geon Lee;Sung Beom Cho;Seonkyung Ko;Jongmin Choi;Younghoon Kim;Taiho Park

作者机构：Department of Chemical EngineeringPohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Materials Science and EngineeringHanyang UniversitySeoul 04763Republic of Korea Center of Materials DigitalizationKorea Institute of Ceramic Engineering and Technology(KICET)Jinju 52851Republic of Korea Department of Materials Science and EngineeringAjou UniversitySuwon 16499Republic of Korea Department of Energy Science and EngineeringDaegu Gyeongbuk Institute of Science and Technology(DGIST)Daegu 42988Republic of Korea Department of ChemistryKookmin UniversitySeoul 02707Republic of Korea 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2022年第14卷第12期

页      面：272-285页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：This work was supported by National Research Foundation of Korea(NRF)grants funded by Ministry of Science and ICT(MSIT)(Nos.2021R1A2C3004420,2022M3J1A1085282,2020R1C1C1012256 and 2020R1C1C1003214) the NRF of Korea grant funded by the Korean Government(NRF-2019-Global Ph.D.Fellowship Program 

主　　题：CsPbI3 quantum dots Star-shaped organic semiconductors Hybrid perovskite quantum dots Solar cell stability High-efficiency photovoltaics 

摘      要：Perovskite quantum dots(PQDs)have been considered promising and effective photovoltaic absorber due to their superior optoelectronic properties and inherent material merits combining perovskites and ***,they exhibit low moisture stability at room humidity(20-30%)owing to many surface defect sites generated by inefficient ligand exchange *** surface traps must be re-passivated to improve both charge transport ability and moisture *** address this issue,PQD-organic semiconductor hybrid solar cells with suitable electrical properties and functional groups might dramatically improve the charge extraction and defect *** organic semiconductors are typically low-dimensional(1D and 2D)and prone to excessive self-aggregation,which limits chemical interaction with *** this work,we designed a new 3D star-shaped semiconducting material(Star-TrCN)to enhance the compatibility with *** robust bonding with Star-TrCN and PQDs is demonstrated by theoretical modeling and experimental *** Star-TrCN-PQD hybrid films show improved cubic-phase stability of CsPbI_(3)-PQDs via reduced surface trap states and suppressed moisture *** a result,the resultant devices not only achieve remarkable device stability over 1000 h at 20-30%relative humidity,but also boost power conversion efficiency up to 16.0%via forming a cascade energy band structure.