Towards efficient perovskite light-emitting diodes: A multi-step spin-coating method for a dense and uniform perovskite film

Zengqin Feng; Liang Wang; Hongtao Yu; Xiaoqian Ma; Qing Zhang; Shufen Chen; Lihui Liu; Wei Huang

doi:10.1016/j.orgel.2018.06.052

Towards efficient perovskite light-emitting diodes: A multi-step spin-coating method for a dense and uniform perovskite film

Zengqin Feng, Liang Wang, Hongtao Yu, Xiaoqian Ma, Qing Zhang, Shufen Chen, Lihui Liu, Wei Huang

Institute of Flexible Electronics

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

15 Scopus citations

Abstract

Although organometal halide perovskites are emerging as emitters with extremely high color purity and low cost, device performances are significantly restricted by poor morphology of the perovskite layer. In this work, a multi-step spin-coating method is used to prepare CH₃NH₃PbBr₃ perovskite layer, which a dense and uniform perovskite film with small grain sizes and a ∼100% coverage. Moreover, the component of the hole injection layer poly(3,4-ethylenedioxythio- phene):poly(4-styrenesulphonate) (PEDOT:PSS) adjusted with PSS is applied to reduce the injection barrier between PEDOT:PSS and perovskite layer. With above-mentioned approaches, efficient perovskite light-emitting diodes with maximum luminance and current efficiency of 9900 cd m⁻² and 2.6 cd A⁻¹ are eventually acquired.

Original language	English
Pages (from-to)	18-24
Number of pages	7
Journal	Organic Electronics
Volume	61
DOIs	https://doi.org/10.1016/j.orgel.2018.06.052
State	Published - Oct 2018

Keywords

Multi-step spin-coating
PSS
Perovskite light emitting diodes
Work function

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10.1016/j.orgel.2018.06.052

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title = "Towards efficient perovskite light-emitting diodes: A multi-step spin-coating method for a dense and uniform perovskite film",

abstract = "Although organometal halide perovskites are emerging as emitters with extremely high color purity and low cost, device performances are significantly restricted by poor morphology of the perovskite layer. In this work, a multi-step spin-coating method is used to prepare CH3NH3PbBr3 perovskite layer, which a dense and uniform perovskite film with small grain sizes and a ∼100% coverage. Moreover, the component of the hole injection layer poly(3,4-ethylenedioxythio- phene):poly(4-styrenesulphonate) (PEDOT:PSS) adjusted with PSS is applied to reduce the injection barrier between PEDOT:PSS and perovskite layer. With above-mentioned approaches, efficient perovskite light-emitting diodes with maximum luminance and current efficiency of 9900 cd m−2 and 2.6 cd A−1 are eventually acquired.",

keywords = "Multi-step spin-coating, PSS, Perovskite light emitting diodes, Work function",

author = "Zengqin Feng and Liang Wang and Hongtao Yu and Xiaoqian Ma and Qing Zhang and Shufen Chen and Lihui Liu and Wei Huang",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = oct,

doi = "10.1016/j.orgel.2018.06.052",

language = "英语",

volume = "61",

pages = "18--24",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Towards efficient perovskite light-emitting diodes

T2 - A multi-step spin-coating method for a dense and uniform perovskite film

AU - Feng, Zengqin

AU - Wang, Liang

AU - Yu, Hongtao

AU - Ma, Xiaoqian

AU - Zhang, Qing

AU - Chen, Shufen

AU - Liu, Lihui

AU - Huang, Wei

PY - 2018/10

Y1 - 2018/10

N2 - Although organometal halide perovskites are emerging as emitters with extremely high color purity and low cost, device performances are significantly restricted by poor morphology of the perovskite layer. In this work, a multi-step spin-coating method is used to prepare CH3NH3PbBr3 perovskite layer, which a dense and uniform perovskite film with small grain sizes and a ∼100% coverage. Moreover, the component of the hole injection layer poly(3,4-ethylenedioxythio- phene):poly(4-styrenesulphonate) (PEDOT:PSS) adjusted with PSS is applied to reduce the injection barrier between PEDOT:PSS and perovskite layer. With above-mentioned approaches, efficient perovskite light-emitting diodes with maximum luminance and current efficiency of 9900 cd m−2 and 2.6 cd A−1 are eventually acquired.

AB - Although organometal halide perovskites are emerging as emitters with extremely high color purity and low cost, device performances are significantly restricted by poor morphology of the perovskite layer. In this work, a multi-step spin-coating method is used to prepare CH3NH3PbBr3 perovskite layer, which a dense and uniform perovskite film with small grain sizes and a ∼100% coverage. Moreover, the component of the hole injection layer poly(3,4-ethylenedioxythio- phene):poly(4-styrenesulphonate) (PEDOT:PSS) adjusted with PSS is applied to reduce the injection barrier between PEDOT:PSS and perovskite layer. With above-mentioned approaches, efficient perovskite light-emitting diodes with maximum luminance and current efficiency of 9900 cd m−2 and 2.6 cd A−1 are eventually acquired.

KW - Multi-step spin-coating

KW - PSS

KW - Perovskite light emitting diodes

KW - Work function

UR - http://www.scopus.com/inward/record.url?scp=85049303900&partnerID=8YFLogxK

U2 - 10.1016/j.orgel.2018.06.052

DO - 10.1016/j.orgel.2018.06.052

M3 - 文章

AN - SCOPUS:85049303900

SN - 1566-1199

VL - 61

SP - 18

EP - 24

JO - Organic Electronics

JF - Organic Electronics

ER -

Towards efficient perovskite light-emitting diodes: A multi-step spin-coating method for a dense and uniform perovskite film

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Keywords

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