Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation

Aditya S. Yerramilli; Yuanqing Chen; Terry Alford

doi:10.1557/mrc.2018.231

Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation

Aditya S. Yerramilli, Yuanqing Chen, Terry Alford

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

2 Scopus citations

Abstract

Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/ITO/PEDOT:PSS/MAPbI3/PCBM/Ag device configuration. Devices fabricated using the Pb-acetate precursors showed an efficiency of 13%. This work reports the effect of adding excess lead to the precursor and its impact on the light-induced degradation of efficiency. It is found that 5% excess lead is best for devices regarding the performance and stability and devices retained greater than 50% of the initial efficiency after 2 h of prolonged irradiation. We attribute this phenomenon to the formation of PbI ₂ which induces passivation in the grain-boundaries.

Original language	English (US)
Pages (from-to)	189-193
Number of pages	5
Journal	MRS Communications
Volume	9
Issue number	1
DOIs	https://doi.org/10.1557/mrc.2018.231
State	Published - Mar 1 2019

ASJC Scopus subject areas

Materials Science(all)

Access to Document

10.1557/mrc.2018.231

Cite this

@article{742b941dc7eb48839333c74a4472d920,

title = "Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation",

abstract = " Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/ITO/PEDOT:PSS/MAPbI3/PCBM/Ag device configuration. Devices fabricated using the Pb-acetate precursors showed an efficiency of 13%. This work reports the effect of adding excess lead to the precursor and its impact on the light-induced degradation of efficiency. It is found that 5% excess lead is best for devices regarding the performance and stability and devices retained greater than 50% of the initial efficiency after 2 h of prolonged irradiation. We attribute this phenomenon to the formation of PbI 2 which induces passivation in the grain-boundaries. ",

author = "Yerramilli, {Aditya S.} and Yuanqing Chen and Terry Alford",

year = "2019",

month = mar,

day = "1",

doi = "10.1557/mrc.2018.231",

language = "English (US)",

volume = "9",

pages = "189--193",

journal = "MRS Communications",

issn = "2159-6859",

publisher = "Cambridge University Press",

number = "1",

}

TY - JOUR

T1 - Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation

AU - Yerramilli, Aditya S.

AU - Chen, Yuanqing

AU - Alford, Terry

PY - 2019/3/1

Y1 - 2019/3/1

N2 - Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/ITO/PEDOT:PSS/MAPbI3/PCBM/Ag device configuration. Devices fabricated using the Pb-acetate precursors showed an efficiency of 13%. This work reports the effect of adding excess lead to the precursor and its impact on the light-induced degradation of efficiency. It is found that 5% excess lead is best for devices regarding the performance and stability and devices retained greater than 50% of the initial efficiency after 2 h of prolonged irradiation. We attribute this phenomenon to the formation of PbI 2 which induces passivation in the grain-boundaries.

AB - Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/ITO/PEDOT:PSS/MAPbI3/PCBM/Ag device configuration. Devices fabricated using the Pb-acetate precursors showed an efficiency of 13%. This work reports the effect of adding excess lead to the precursor and its impact on the light-induced degradation of efficiency. It is found that 5% excess lead is best for devices regarding the performance and stability and devices retained greater than 50% of the initial efficiency after 2 h of prolonged irradiation. We attribute this phenomenon to the formation of PbI 2 which induces passivation in the grain-boundaries.

UR - http://www.scopus.com/inward/record.url?scp=85063267623&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85063267623&partnerID=8YFLogxK

U2 - 10.1557/mrc.2018.231

DO - 10.1557/mrc.2018.231

M3 - Article

AN - SCOPUS:85063267623

SN - 2159-6859

VL - 9

SP - 189

EP - 193

JO - MRS Communications

JF - MRS Communications

IS - 1

ER -

Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this