Back to Search Start Over

Toward high‐efficiency stable 2D/3D perovskite solar cells by incorporating multifunctional CNT:TiO2 additives into 3D perovskite layer

Authors :
Mengqi Jin
Huilin Li
Qiang Lou
Qing Du
Qingsong Huang
Zhitao Shen
Fumin Li
Chong Chen
Source :
EcoMat, Vol 4, Iss 2, Pp n/a-n/a (2022)
Publication Year :
2022
Publisher :
Wiley, 2022.

Abstract

Abstract The power conversion efficiency (PCE) of 2D/3D perovskite solar cells (PSCs) is still significantly low compared with 3D PSCs due to the poor charge transport ability of 2D perovskite thin films and a large number of defects in 3D thin films. Herein, to address these two issues, multifunctional TiO2 nanoparticles (NPs)‐modified carbon nanotubes (CNT:TiO2) additives are incorporated into 3D perovskite layer for the first time, and demonstrate three positive effects for CNT:TiO2 material application: firstly, it passivates the defect state of the 3D perovskite layer and enhances the charge mobility of the 3D layer; secondly, its interaction with the 2D film increases the conductivity of the 2D layer and produces the interface polarization electric field to promote the hole extraction. As a consequence, not only the PCE of the optimized 2D/3D PSCs with the CNT:TiO2 is greatly improved to 22.7% from 19.8% of the control PSCs, but also the stability is significantly improved.

Details

Language :
English
ISSN :
25673173
Volume :
4
Issue :
2
Database :
Directory of Open Access Journals
Journal :
EcoMat
Publication Type :
Academic Journal
Accession number :
edsdoj.1683c3e7df0241bd951795cc0e117117
Document Type :
article
Full Text :
https://doi.org/10.1002/eom2.12166