Efficient and stable mesoscopic perovskite solar cell in high humidity by localized Dion-Jacobson 2D‐3D heterostructures

Li，Wenhui1; Gu，Xiaoyu1; Shan，Chengwei1; Lai，Xue1; Sun，Xiao Wei1,2; Kyaw，Aung Ko Ko1,2

2022

10.1016/j.nanoen.2021.106666

Nano Energy   影响因子和分区

2211-2855

2211-3282

Mesoscopic perovskite solar cells (PSCs) suffer from poor stability despite high efficiency, due to irreversible decomposition of perovskite in moisture. Herein, we demonstrate localized Dion−Jacobson (DJ) 2D–3D heterostructure (L2D–3DH), in which DJ 2D perovskite is formed on the localized surface of 3D perovskite without fully covering it, to improve the efficiency and stability of PSCs simultaneously. Different from conventional 2D–3D composite, L2D–3DH does not hinder the charge transfer between perovskite and hole transport layer due to partial coverage of DJ 2D yet effectively improve the moisture stability. Moreover, control of crystal orientation is not critical for efficient charge transport. As a result, L2D–3DH yields a power conversion efficiency of 20.1%, which is higher than that obtained from pure 3D perovskite or conventional 2D–3D composite. The improved PCE can be attributed to the passivation of 3D perovskite with DJ 2D plates, which reduces the trap density, suppresses non-radiative recombination, and enhances quasi-Fermi level splitting. The L2D–3DH-based device retains 86% of the initial efficiency after 1300 h under high humidity (70% RH). This work offers a simple and effective way to improve the efficiency and stability of PSCs by incorporating the DJ 2D in 3D perovskite.

2D perovskite 2D–3D composite Dion-Jacobson phase moisture stability perovskite solar cell

SCI ; EI

英语

第一 ; 通讯

Guangdong Basic and Applied Basic Research Foundation[2020A1515010916] ; Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting[2017KSYS007] ; High-level University Fund[G02236004] ; Shenzhen Postdoctoral Start-up Research Fund[K21237501]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000720212800004

ELSEVIER

20214611166057

Charge transfer ; Crystal orientation ; Efficiency ; Moisture ; Perovskite solar cells ; Stability ; Superconducting materials

Minerals:482.2 ; Solar Cells:702.3 ; Superconducting Materials:708.3 ; Chemical Reactions:802.2 ; Production Engineering:913.1 ; Crystal Lattice:933.1.1

2-s2.0-85119018753

Scopus

1.Guangdong University Key Laboratory for Advanced Quantum Dot Displays and Lighting,and Department of Electrical & Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Shenzhen Planck Innovation Technology Co.,Ltd,Shenzhen,No. 8, Liuhe Road, Longgang District,China

Li，Wenhui,Gu，Xiaoyu,Shan，Chengwei,等. Efficient and stable mesoscopic perovskite solar cell in high humidity by localized Dion-Jacobson 2D‐3D heterostructures[J]. Nano Energy,2022,91.

Li，Wenhui,Gu，Xiaoyu,Shan，Chengwei,Lai，Xue,Sun，Xiao Wei,&Kyaw，Aung Ko Ko.(2022).Efficient and stable mesoscopic perovskite solar cell in high humidity by localized Dion-Jacobson 2D‐3D heterostructures.Nano Energy,91.

Li，Wenhui,et al."Efficient and stable mesoscopic perovskite solar cell in high humidity by localized Dion-Jacobson 2D‐3D heterostructures".Nano Energy 91(2022).