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MXene-Modulated Electrode/SnO2Interface Boosting Charge Transport in Perovskite Solar Cells

  • Yunfan Wang
  • , Pan Xiang
  • , Aobo Ren*
  • , Huagui Lai
  • , Zhuoqiong Zhang
  • , Zhipeng Xuan
  • , Zhenxi Wan
  • , Jingquan Zhang
  • , Xia Hao*
  • , Lili Wu
  • , Masakazu Sugiyama
  • , Udo Schwingenschlögl
  • , Cai Liu
  • , Zeguo Tang
  • , Jiang Wu
  • , Zhiming Wang
  • , Dewei Zhao*
  • *Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

112 Citations (Scopus)

Abstract

Interface engineering is imperative to boost the extraction capability in perovskite solar cells (PSCs). We propose a promising approach to enhance the electron mobility and charge transfer ability of tin oxide (SnO2) electron transport layer (ETL) by introducing a two-dimensional carbide (MXene) with strong interface interaction. The MXene-modified SnO2 ETL also offers a preferable growth platform for perovskite films with reduced trap density. Through a spatially resolved imaging technique, profoundly reduced non-radiative recombination and charge transport losses in PSCs based on MXene-modified SnO2 are also observed. As a result, the PSC achieves an enhanced efficiency of 20.65% with ultralow saturated current density and negligible hysteresis. We provide an in-depth mechanistic understanding of MXene interface engineering, offering an alternative approach to obtain efficient PSCs.

Original languageEnglish
Pages (from-to)53973-53983
Number of pages11
JournalACS Applied Materials and Interfaces
Volume12
Issue number48
Early online date17 Nov 2020
DOIs
Publication statusPublished - 2 Dec 2020

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 9 - Industry, Innovation, and Infrastructure
    SDG 9 Industry, Innovation, and Infrastructure

User-Defined Keywords

  • current transport efficiency
  • electroluminescence imaging
  • energy level alignment
  • interface engineering
  • perovskite solar cells
  • Ti3C2Tx MXene

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