Stable small-molecule organic solar cells with 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene as an organic buffer

H. R. Wu; Q. L. Song; M. L. Wang; F. Y. Li; H. Yang; Y. Wu; C. H. Huang; X. M. Ding; X. Y. Hou

doi:10.1016/j.tsf.2007.03.187

Stable small-molecule organic solar cells with 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene as an organic buffer

H. R. Wu, Q. L. Song, M. L. Wang, F. Y. Li, H. Yang, Y. Wu, C. H. Huang, X. M. Ding, X. Y. Hou

Fudan University

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

47 Scopus citations

Abstract

We demonstrate in this paper that crystallization of bathocuproine (BCP) is the main reason for the instability of fullerene-based devices with BCP buffer by in-situ measurement of current degradation in oxygen and by polarized light microscopy. In order to improve the performance of organic solar cells, 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene (TPBI) takes the place of BCP. Organic solar cells with power conversion efficiency 2.32% under 75 mW/cm² AM1.5G simulated illumination and shelf-lifetime over 1800 min in atmosphere without encapsulation are achieved. The improved performance is ascribed to the better stability and higher electron mobility of TPBI than that of BCP.

Original language	English
Pages (from-to)	8050-8053
Number of pages	4
Journal	Thin Solid Films
Volume	515
Issue number	20-21
DOIs	https://doi.org/10.1016/j.tsf.2007.03.187
State	Published - 31 Jul 2007
Externally published	Yes

Keywords

BCP
Crystallization
Lifetime
Organic solar cell
TPBI

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10.1016/j.tsf.2007.03.187

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@article{10d4dd7780a34f5fad5513a246255b31,

title = "Stable small-molecule organic solar cells with 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene as an organic buffer",

abstract = "We demonstrate in this paper that crystallization of bathocuproine (BCP) is the main reason for the instability of fullerene-based devices with BCP buffer by in-situ measurement of current degradation in oxygen and by polarized light microscopy. In order to improve the performance of organic solar cells, 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene (TPBI) takes the place of BCP. Organic solar cells with power conversion efficiency 2.32% under 75 mW/cm2 AM1.5G simulated illumination and shelf-lifetime over 1800 min in atmosphere without encapsulation are achieved. The improved performance is ascribed to the better stability and higher electron mobility of TPBI than that of BCP.",

keywords = "BCP, Crystallization, Lifetime, Organic solar cell, TPBI",

author = "Wu, {H. R.} and Song, {Q. L.} and Wang, {M. L.} and Li, {F. Y.} and H. Yang and Y. Wu and Huang, {C. H.} and Ding, {X. M.} and Hou, {X. Y.}",

year = "2007",

month = jul,

day = "31",

doi = "10.1016/j.tsf.2007.03.187",

language = "英语",

volume = "515",

pages = "8050--8053",

journal = "Thin Solid Films",

issn = "0040-6090",

publisher = "Elsevier B.V.",

number = "20-21",

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TY - JOUR

T1 - Stable small-molecule organic solar cells with 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene as an organic buffer

AU - Wu, H. R.

AU - Song, Q. L.

AU - Wang, M. L.

AU - Li, F. Y.

AU - Yang, H.

AU - Wu, Y.

AU - Huang, C. H.

AU - Ding, X. M.

AU - Hou, X. Y.

PY - 2007/7/31

Y1 - 2007/7/31

N2 - We demonstrate in this paper that crystallization of bathocuproine (BCP) is the main reason for the instability of fullerene-based devices with BCP buffer by in-situ measurement of current degradation in oxygen and by polarized light microscopy. In order to improve the performance of organic solar cells, 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene (TPBI) takes the place of BCP. Organic solar cells with power conversion efficiency 2.32% under 75 mW/cm2 AM1.5G simulated illumination and shelf-lifetime over 1800 min in atmosphere without encapsulation are achieved. The improved performance is ascribed to the better stability and higher electron mobility of TPBI than that of BCP.

AB - We demonstrate in this paper that crystallization of bathocuproine (BCP) is the main reason for the instability of fullerene-based devices with BCP buffer by in-situ measurement of current degradation in oxygen and by polarized light microscopy. In order to improve the performance of organic solar cells, 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene (TPBI) takes the place of BCP. Organic solar cells with power conversion efficiency 2.32% under 75 mW/cm2 AM1.5G simulated illumination and shelf-lifetime over 1800 min in atmosphere without encapsulation are achieved. The improved performance is ascribed to the better stability and higher electron mobility of TPBI than that of BCP.

KW - BCP

KW - Crystallization

KW - Lifetime

KW - Organic solar cell

KW - TPBI

UR - http://www.scopus.com/inward/record.url?scp=34547698808&partnerID=8YFLogxK

U2 - 10.1016/j.tsf.2007.03.187

DO - 10.1016/j.tsf.2007.03.187

M3 - 文章

AN - SCOPUS:34547698808

SN - 0040-6090

VL - 515

SP - 8050

EP - 8053

JO - Thin Solid Films

JF - Thin Solid Films

IS - 20-21

ER -

Stable small-molecule organic solar cells with 1,3,5-tris(2-N-phenylbenzimidazolyl) benzene as an organic buffer

Abstract

Keywords

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