Mesoporous PbI2 assisted growth of large perovskite grains for efficient perovskite solar cells based on ZnO nanorods

Shibin Li; Peng Zhang; Hao Chen; Yafei Wang; Detao Liu; Jiang Wu; Hojjatollah Sarvari; Zhi David Chen

doi:10.1016/j.jpowsour.2017.01.024

Mesoporous PbI₂ assisted growth of large perovskite grains for efficient perovskite solar cells based on ZnO nanorods

Shibin Li, Peng Zhang, Hao Chen, Yafei Wang, Detao Liu, Jiang Wu, Hojjatollah Sarvari, Zhi David Chen

Research output: Contribution to journal › Article › peer-review

106 Scopus citations

Abstract

Perovskite solar cells (PSCs) have attracted great attention due to their low cost and high power conversion efficiency (PCE). However, the defects and grain boundaries in perovskite films dramatically degrade their performance. Here, we show a two-step annealing method to produce mesoporous PbI₂films for growth of continuous, pinhole-free perovskite films with large grains, followed by additional ethanol vapor annealing of perovskite films to reduce the defects and grain boundaries. The large perovskite grains dramatically suppress the carrier recombination, and consequently we obtain ZnO-nanorod-based PSCs that exhibit the best efficiency of 17.3%, with high reproducibility.

Original language	English
Pages (from-to)	990-997
Number of pages	8
Journal	Journal of Power Sources
Volume	342
DOIs	https://doi.org/10.1016/j.jpowsour.2017.01.024
State	Published - 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Funding

This work was supported by National Natural Science Foundation of China under Grant Nos. 61574029, 61371046, and 61421002, and National Higher-education Institution General Research and Development Fund (ZYGX2014J044). This work was also partially supported by University of Kentucky.

Funders	Funder number
National Higher-education Institution General Research and Development Fund	ZYGX2014J044
University of Kentucky
National Natural Science Foundation of China (NSFC)	61574029, 61371046, 61421002

Keywords

Carrier recombination
Mesoporous PbI
Perovskite solar cell
ZnO nanorods

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

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

Access to Document

10.1016/j.jpowsour.2017.01.024

Cite this

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title = "Mesoporous PbI2 assisted growth of large perovskite grains for efficient perovskite solar cells based on ZnO nanorods",

abstract = "Perovskite solar cells (PSCs) have attracted great attention due to their low cost and high power conversion efficiency (PCE). However, the defects and grain boundaries in perovskite films dramatically degrade their performance. Here, we show a two-step annealing method to produce mesoporous PbI2films for growth of continuous, pinhole-free perovskite films with large grains, followed by additional ethanol vapor annealing of perovskite films to reduce the defects and grain boundaries. The large perovskite grains dramatically suppress the carrier recombination, and consequently we obtain ZnO-nanorod-based PSCs that exhibit the best efficiency of 17.3%, with high reproducibility.",

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author = "Shibin Li and Peng Zhang and Hao Chen and Yafei Wang and Detao Liu and Jiang Wu and Hojjatollah Sarvari and Chen, {Zhi David}",

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doi = "10.1016/j.jpowsour.2017.01.024",

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T1 - Mesoporous PbI2 assisted growth of large perovskite grains for efficient perovskite solar cells based on ZnO nanorods

AU - Li, Shibin

AU - Zhang, Peng

AU - Chen, Hao

AU - Wang, Yafei

AU - Liu, Detao

AU - Wu, Jiang

AU - Sarvari, Hojjatollah

AU - Chen, Zhi David

PY - 2017

Y1 - 2017

N2 - Perovskite solar cells (PSCs) have attracted great attention due to their low cost and high power conversion efficiency (PCE). However, the defects and grain boundaries in perovskite films dramatically degrade their performance. Here, we show a two-step annealing method to produce mesoporous PbI2films for growth of continuous, pinhole-free perovskite films with large grains, followed by additional ethanol vapor annealing of perovskite films to reduce the defects and grain boundaries. The large perovskite grains dramatically suppress the carrier recombination, and consequently we obtain ZnO-nanorod-based PSCs that exhibit the best efficiency of 17.3%, with high reproducibility.

AB - Perovskite solar cells (PSCs) have attracted great attention due to their low cost and high power conversion efficiency (PCE). However, the defects and grain boundaries in perovskite films dramatically degrade their performance. Here, we show a two-step annealing method to produce mesoporous PbI2films for growth of continuous, pinhole-free perovskite films with large grains, followed by additional ethanol vapor annealing of perovskite films to reduce the defects and grain boundaries. The large perovskite grains dramatically suppress the carrier recombination, and consequently we obtain ZnO-nanorod-based PSCs that exhibit the best efficiency of 17.3%, with high reproducibility.

KW - Carrier recombination

KW - Mesoporous PbI

KW - Perovskite solar cell

KW - ZnO nanorods

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