Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells

Huanle Chen; Weifei Fu; Chuyi Huang; Zhongqiang Zhang; Shuixing Li; Feizhi Ding; Minmin Shi; Chang-Zhi Li; Alex K.-Y. Jen; Hongzheng Chen

doi:10.1002/aenm.201700012

Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells

Huanle Chen, Weifei Fu, Chuyi Huang, Zhongqiang Zhang, Shuixing Li, Feizhi Ding, Minmin Shi, Chang-Zhi Li^*, Alex K.-Y. Jen^*, Hongzheng Chen^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

209 Citations (Scopus)

Abstract

Two hole-extraction materials (HEMs), TPP-OMeTAD and TPP-SMeTAD, have been developed to facilitate the fabrication of efficient p-i-n perovskite solar cells (PVSCs). By replacing the oxygen atom on HEM with sulfur (from TPP-OMeTAD to TPP-SMeTAD), it effectively lowers the highest occupied molecular orbital of the molecule and provides stronger Pb—S interaction with perovskites, leading to efficient charge extraction and surface traps passivation. The TPP-SMeTAD-based PVSCs exhibit both improved photovoltaic performance and reduced hysteresis in p-i-n PVSCs over those based on TPP-OMeTAD. This work not only provides new insights on creating perovskite-HEM heterojunction but also helps in designing new HEM to enable efficient organic–inorganic hybrid PVSCs.

Original language	English
Article number	1700012
Journal	Advanced Energy Materials
Volume	7
Issue number	18
Online published	12 May 2017
DOIs	https://doi.org/10.1002/aenm.201700012
Publication status	Published - 20 Sept 2017

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

SDG 7 Affordable and Clean Energy

Research Keywords

hole-extraction materials
molecular engineering
perovskite solar cells
sulfur atoms

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@article{aa5cbb3518464f86955cf2cb93b17344,

title = "Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells",

abstract = "Two hole-extraction materials (HEMs), TPP-OMeTAD and TPP-SMeTAD, have been developed to facilitate the fabrication of efficient p-i-n perovskite solar cells (PVSCs). By replacing the oxygen atom on HEM with sulfur (from TPP-OMeTAD to TPP-SMeTAD), it effectively lowers the highest occupied molecular orbital of the molecule and provides stronger Pb—S interaction with perovskites, leading to efficient charge extraction and surface traps passivation. The TPP-SMeTAD-based PVSCs exhibit both improved photovoltaic performance and reduced hysteresis in p-i-n PVSCs over those based on TPP-OMeTAD. This work not only provides new insights on creating perovskite-HEM heterojunction but also helps in designing new HEM to enable efficient organic–inorganic hybrid PVSCs.",

keywords = "hole-extraction materials, molecular engineering, perovskite solar cells, sulfur atoms",

author = "Huanle Chen and Weifei Fu and Chuyi Huang and Zhongqiang Zhang and Shuixing Li and Feizhi Ding and Minmin Shi and Chang-Zhi Li and Jen, {Alex K.-Y.} and Hongzheng Chen",

year = "2017",

month = sep,

day = "20",

doi = "10.1002/aenm.201700012",

language = "English",

volume = "7",

journal = "Advanced Energy Materials",

issn = "1614-6832",

publisher = "John Wiley & Sons",

number = "18",

}

TY - JOUR

T1 - Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells

AU - Chen, Huanle

AU - Fu, Weifei

AU - Huang, Chuyi

AU - Zhang, Zhongqiang

AU - Li, Shuixing

AU - Ding, Feizhi

AU - Shi, Minmin

AU - Li, Chang-Zhi

AU - Jen, Alex K.-Y.

AU - Chen, Hongzheng

PY - 2017/9/20

Y1 - 2017/9/20

N2 - Two hole-extraction materials (HEMs), TPP-OMeTAD and TPP-SMeTAD, have been developed to facilitate the fabrication of efficient p-i-n perovskite solar cells (PVSCs). By replacing the oxygen atom on HEM with sulfur (from TPP-OMeTAD to TPP-SMeTAD), it effectively lowers the highest occupied molecular orbital of the molecule and provides stronger Pb—S interaction with perovskites, leading to efficient charge extraction and surface traps passivation. The TPP-SMeTAD-based PVSCs exhibit both improved photovoltaic performance and reduced hysteresis in p-i-n PVSCs over those based on TPP-OMeTAD. This work not only provides new insights on creating perovskite-HEM heterojunction but also helps in designing new HEM to enable efficient organic–inorganic hybrid PVSCs.

AB - Two hole-extraction materials (HEMs), TPP-OMeTAD and TPP-SMeTAD, have been developed to facilitate the fabrication of efficient p-i-n perovskite solar cells (PVSCs). By replacing the oxygen atom on HEM with sulfur (from TPP-OMeTAD to TPP-SMeTAD), it effectively lowers the highest occupied molecular orbital of the molecule and provides stronger Pb—S interaction with perovskites, leading to efficient charge extraction and surface traps passivation. The TPP-SMeTAD-based PVSCs exhibit both improved photovoltaic performance and reduced hysteresis in p-i-n PVSCs over those based on TPP-OMeTAD. This work not only provides new insights on creating perovskite-HEM heterojunction but also helps in designing new HEM to enable efficient organic–inorganic hybrid PVSCs.

KW - hole-extraction materials

KW - molecular engineering

KW - perovskite solar cells

KW - sulfur atoms

UR - http://www.scopus.com/inward/record.url?scp=85019087389&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85019087389&origin=recordpage

U2 - 10.1002/aenm.201700012

DO - 10.1002/aenm.201700012

M3 - RGC 21 - Publication in refereed journal

SN - 1614-6832

VL - 7

JO - Advanced Energy Materials

JF - Advanced Energy Materials

IS - 18

M1 - 1700012

ER -

Molecular Engineered Hole-Extraction Materials to Enable Dopant-Free, Efficient p-i-n Perovskite Solar Cells

Abstract

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