Spatially inhomogeneous photoluminescence-voltage hysteresis in planar heterojunction perovskite-based solar cells

Zhihua Xu, Anthony Edgeton, Sydney Costello

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Spatially resolved photoluminescence (PL) of methylammonium lead iodide (MAPbI3) films in planar heterojunction solar cells is probed by time-resolved confocal microscopy to study the interface effect on PL intensity-voltage (PL-V) hysteresis. Negligible PL-V hysteresis is observed at the interfacial area, while significant hysteresis is observed in the bulk film. PL lifetime imaging of the perovskite device reveals inhomogeneous charge extraction due to variation of the interfacial contact quality. Poor interfacial contact leads to more severe PL-V hysteresis in the bulk perovskite film. The PL-V characteristics also suggest that voltage-driven ion migration may lead to redistribution of charge traps, and consequently affect the nonradiative charge recombination and the PL intensity in MAPbI3 films.

Original languageEnglish (US)
Article number223901
JournalApplied Physics Letters
Volume111
Issue number22
DOIs
StatePublished - Nov 27 2017

Fingerprint

heterojunctions
solar cells
hysteresis
photoluminescence
electric potential
iodides
traps
microscopy
life (durability)
ions

Cite this

Spatially inhomogeneous photoluminescence-voltage hysteresis in planar heterojunction perovskite-based solar cells. / Xu, Zhihua; Edgeton, Anthony; Costello, Sydney.

In: Applied Physics Letters, Vol. 111, No. 22, 223901, 27.11.2017.

Research output: Contribution to journalArticle

@article{634335344fac4eaa9f719a368b0f6ad1,
title = "Spatially inhomogeneous photoluminescence-voltage hysteresis in planar heterojunction perovskite-based solar cells",
abstract = "Spatially resolved photoluminescence (PL) of methylammonium lead iodide (MAPbI3) films in planar heterojunction solar cells is probed by time-resolved confocal microscopy to study the interface effect on PL intensity-voltage (PL-V) hysteresis. Negligible PL-V hysteresis is observed at the interfacial area, while significant hysteresis is observed in the bulk film. PL lifetime imaging of the perovskite device reveals inhomogeneous charge extraction due to variation of the interfacial contact quality. Poor interfacial contact leads to more severe PL-V hysteresis in the bulk perovskite film. The PL-V characteristics also suggest that voltage-driven ion migration may lead to redistribution of charge traps, and consequently affect the nonradiative charge recombination and the PL intensity in MAPbI3 films.",
author = "Zhihua Xu and Anthony Edgeton and Sydney Costello",
year = "2017",
month = "11",
day = "27",
doi = "10.1063/1.5001326",
language = "English (US)",
volume = "111",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "22",

}

TY - JOUR

T1 - Spatially inhomogeneous photoluminescence-voltage hysteresis in planar heterojunction perovskite-based solar cells

AU - Xu, Zhihua

AU - Edgeton, Anthony

AU - Costello, Sydney

PY - 2017/11/27

Y1 - 2017/11/27

N2 - Spatially resolved photoluminescence (PL) of methylammonium lead iodide (MAPbI3) films in planar heterojunction solar cells is probed by time-resolved confocal microscopy to study the interface effect on PL intensity-voltage (PL-V) hysteresis. Negligible PL-V hysteresis is observed at the interfacial area, while significant hysteresis is observed in the bulk film. PL lifetime imaging of the perovskite device reveals inhomogeneous charge extraction due to variation of the interfacial contact quality. Poor interfacial contact leads to more severe PL-V hysteresis in the bulk perovskite film. The PL-V characteristics also suggest that voltage-driven ion migration may lead to redistribution of charge traps, and consequently affect the nonradiative charge recombination and the PL intensity in MAPbI3 films.

AB - Spatially resolved photoluminescence (PL) of methylammonium lead iodide (MAPbI3) films in planar heterojunction solar cells is probed by time-resolved confocal microscopy to study the interface effect on PL intensity-voltage (PL-V) hysteresis. Negligible PL-V hysteresis is observed at the interfacial area, while significant hysteresis is observed in the bulk film. PL lifetime imaging of the perovskite device reveals inhomogeneous charge extraction due to variation of the interfacial contact quality. Poor interfacial contact leads to more severe PL-V hysteresis in the bulk perovskite film. The PL-V characteristics also suggest that voltage-driven ion migration may lead to redistribution of charge traps, and consequently affect the nonradiative charge recombination and the PL intensity in MAPbI3 films.

UR - http://www.scopus.com/inward/record.url?scp=85035804511&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85035804511&partnerID=8YFLogxK

U2 - 10.1063/1.5001326

DO - 10.1063/1.5001326

M3 - Article

VL - 111

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 22

M1 - 223901

ER -