Optimization of Lead-free Organic–inorganic Tin(II) Halide Perovskite Semiconductors by Scanning Electrochemical Microscopy

Hsien-Yi Hsu; Li Ji; Minshu Du; Ji Zhao; Edward T. Yu; Allen J. Bard

doi:10.1016/j.electacta.2016.10.049

Optimization of Lead-free Organic–inorganic Tin(II) Halide Perovskite Semiconductors by Scanning Electrochemical Microscopy

Hsien-Yi Hsu, Li Ji, Minshu Du, Ji Zhao, Edward T. Yu, Allen J. Bard^*

^*Corresponding author for this work

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

54 Citations (Scopus)

Abstract

Lead-free organic-inorganic tin halide perovskites were prepared and investigated by a rapid screening technique utilizing a modified scanning electrochemical microscope (SECM). We studied liquid junction photoelectrochemical (PEC) solar cells based on p-type methylammonium tin halide (MASnI_3-xBr_x) perovskites employing the benzoquinone (BQ) redox couple, BQ/BQ[rad]⁻, in dichloromethane (CH₂Cl₂). We found that the optimized Sn-based mixed halide perovskite, MASnI_0.5Br_2.5, exhibits enhanced performance and stability in liquid-junction PEC solar cells, with a power conversion efficiency of 1.51% (an increase of 20.8%) and a photovoltaic lifetime of 175 min (an increase of 75.0%), in comparison to MASnI₃ perovskites.

Original language	English
Pages (from-to)	205-210
Journal	Electrochimica Acta
Volume	220
DOIs	https://doi.org/10.1016/j.electacta.2016.10.049
Publication status	Published - 1 Dec 2016
Externally published	Yes

UN SDGs

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

SDG 7 Affordable and Clean Energy

Research Keywords

lead-free
liquid junction
non-toxic
perovskite
photoelectrochemistry
scanning electrochemical microscopy
semiconductor
solar cell
tin

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10.1016/j.electacta.2016.10.049

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title = "Optimization of Lead-free Organic–inorganic Tin(II) Halide Perovskite Semiconductors by Scanning Electrochemical Microscopy",

abstract = "Lead-free organic-inorganic tin halide perovskites were prepared and investigated by a rapid screening technique utilizing a modified scanning electrochemical microscope (SECM). We studied liquid junction photoelectrochemical (PEC) solar cells based on p-type methylammonium tin halide (MASnI3-xBrx) perovskites employing the benzoquinone (BQ) redox couple, BQ/BQ[rad]−, in dichloromethane (CH2Cl2). We found that the optimized Sn-based mixed halide perovskite, MASnI0.5Br2.5, exhibits enhanced performance and stability in liquid-junction PEC solar cells, with a power conversion efficiency of 1.51% (an increase of 20.8%) and a photovoltaic lifetime of 175 min (an increase of 75.0%), in comparison to MASnI3 perovskites.",

keywords = "lead-free, liquid junction, non-toxic, perovskite, photoelectrochemistry, scanning electrochemical microscopy, semiconductor, solar cell, tin",

author = "Hsien-Yi Hsu and Li Ji and Minshu Du and Ji Zhao and Yu, {Edward T.} and Bard, {Allen J.}",

year = "2016",

month = dec,

day = "1",

doi = "10.1016/j.electacta.2016.10.049",

language = "English",

volume = "220",

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journal = "Electrochimica Acta",

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TY - JOUR

T1 - Optimization of Lead-free Organic–inorganic Tin(II) Halide Perovskite Semiconductors by Scanning Electrochemical Microscopy

AU - Hsu, Hsien-Yi

AU - Ji, Li

AU - Du, Minshu

AU - Zhao, Ji

AU - Yu, Edward T.

AU - Bard, Allen J.

PY - 2016/12/1

Y1 - 2016/12/1

N2 - Lead-free organic-inorganic tin halide perovskites were prepared and investigated by a rapid screening technique utilizing a modified scanning electrochemical microscope (SECM). We studied liquid junction photoelectrochemical (PEC) solar cells based on p-type methylammonium tin halide (MASnI3-xBrx) perovskites employing the benzoquinone (BQ) redox couple, BQ/BQ[rad]−, in dichloromethane (CH2Cl2). We found that the optimized Sn-based mixed halide perovskite, MASnI0.5Br2.5, exhibits enhanced performance and stability in liquid-junction PEC solar cells, with a power conversion efficiency of 1.51% (an increase of 20.8%) and a photovoltaic lifetime of 175 min (an increase of 75.0%), in comparison to MASnI3 perovskites.

AB - Lead-free organic-inorganic tin halide perovskites were prepared and investigated by a rapid screening technique utilizing a modified scanning electrochemical microscope (SECM). We studied liquid junction photoelectrochemical (PEC) solar cells based on p-type methylammonium tin halide (MASnI3-xBrx) perovskites employing the benzoquinone (BQ) redox couple, BQ/BQ[rad]−, in dichloromethane (CH2Cl2). We found that the optimized Sn-based mixed halide perovskite, MASnI0.5Br2.5, exhibits enhanced performance and stability in liquid-junction PEC solar cells, with a power conversion efficiency of 1.51% (an increase of 20.8%) and a photovoltaic lifetime of 175 min (an increase of 75.0%), in comparison to MASnI3 perovskites.

KW - lead-free

KW - liquid junction

KW - non-toxic

KW - perovskite

KW - photoelectrochemistry

KW - scanning electrochemical microscopy

KW - semiconductor

KW - solar cell

KW - tin

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U2 - 10.1016/j.electacta.2016.10.049

DO - 10.1016/j.electacta.2016.10.049

M3 - RGC 21 - Publication in refereed journal

SN - 0013-4686

VL - 220

SP - 205

EP - 210

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Optimization of Lead-free Organic–inorganic Tin(II) Halide Perovskite Semiconductors by Scanning Electrochemical Microscopy

Abstract

UN SDGs

Research Keywords

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