Reconfiguration of Interfacial Energy Band Structure for High-performance Inverted Structure Perovskite Solar Cells

Overview

Journal Nat Commun

Specialty Biology

Date 2019 Oct 11

PMID 31597916

Citations 12

Authors

Moyao Zhang

Qi Chen

Rongming Xue

Yu Zhan

Cheng Wang

Junqi Lai

Jin Yang

Hongzhen Lin

Jianlin Yao

Yaowen Li

Liwei Chen

Yongfang Li

Affiliations

Soon will be listed here.

Abstract

Charged defects at the surface of the organic-inorganic perovskite active layer are detrimental to solar cells due to exacerbated charge carrier recombination. Here we show that charged surface defects can be benign after passivation and further exploited for reconfiguration of interfacial energy band structure. Based on the electrostatic interaction between oppositely charged ions, Lewis-acid-featured fullerene skeleton after iodide ionization (PCBB-3N-3I) not only efficiently passivates positively charged surface defects but also assembles on top of the perovskite active layer with preferred orientation. Consequently, PCBB-3N-3I with a strong molecular electric dipole forms a dipole interlayer to reconfigure interfacial energy band structure, leading to enhanced built-in potential and charge collection. As a result, inverted structure planar heterojunction perovskite solar cells exhibit the promising power conversion efficiency of 21.1% and robust ambient stability. This work opens up a new window to boost perovskite solar cells via rational exploitation of charged defects beyond passivation.

Citing Articles

Top-Down Dual-Interface Carrier Management for Highly Efficient and Stable Perovskite/Silicon Tandem Solar Cells.

Li X, Ying Z, Li S, Chen L, Zhang M, Liu L Nanomicro Lett. 2025; 17(1):141.

PMID: 39932612 PMC: 11813841. DOI: 10.1007/s40820-024-01631-x.

Toward Understanding the Built-in Field in Perovskite Solar Cells through Layer-by-Layer Surface Photovoltage Measurements.

Gutierrez-Partida E, Rusu M, Zu F, Raoufi M, Diekmann J, Tokmoldin N ACS Appl Mater Interfaces. 2025; 17(7):11176-11186.

PMID: 39907681 PMC: 11843610. DOI: 10.1021/acsami.4c14194.

Enlarging moment and regulating orientation of buried interfacial dipole for efficient inverted perovskite solar cells.

Peng Y, Chen Y, Zhou J, Luo C, Tang W, Duan Y Nat Commun. 2025; 16(1):1252.

PMID: 39893189 PMC: 11787323. DOI: 10.1038/s41467-024-55653-5.

Poly(amic acid)-Polyimide Copolymer Interfacial Layers for Self-Powered CHNHPbI Photovoltaic Photodiodes.

Kim W, Park J, Jeong H, Lee K, Yang S, Choi E Polymers (Basel). 2025; 17(2).

PMID: 39861236 PMC: 11768244. DOI: 10.3390/polym17020163.

Spontaneous curvature in two-dimensional van der Waals heterostructures.

Gao Y, Deng F, He R, Zhong Z Nat Commun. 2025; 16(1):717.

PMID: 39819969 PMC: 11739405. DOI: 10.1038/s41467-025-56055-x.

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