Tuning acceptor energy level for efficient charge collection in copper-phthalocyanine-based organic solar cells

被引：107

作者：

Chu, CW ^{[1
]}

Shrotriya, V ^{[1
]}

Li, G ^{[1
]}

Yang, Y ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 15期

关键词：

D O I：

10.1063/1.2194207

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We compare organic donor/acceptor heterojunction photovoltaic devices based on copper phthalocyanine (CuPc) as the donor and [6,6]-phenyl C-60 butyric acid methyl ester (PCBM) or buckminsterfullerene (C-60) as the acceptor. The effect of the two acceptors on open-circuit voltage and short-circuit current density is studied. Improved interface properties, optimal energy level matching, and more balanced charge transport are believed to be the reasons for better performance of CuPc/PCBM heterojunction device, in terms of photocurrent and fill factor. The energy conversion efficiency of the devices under AM1.5G solar illumination at 130 mW/cm(2) is improved to 1.18%, up from 0.74%.

引用

页数：3

共 20 条

[1] Electron and hole transport in poly(p-phenylene vinylene) devices [J].

Blom, PWM ;

deJong, MJM ;

Vleggaar, JJM .

APPLIED PHYSICS LETTERS, 1996, 68 (23) :3308-3310

[2]

Brabec CJ, 2001, ADV FUNCT MATER, V11, P15, DOI 10.1002/1616-3028(200102)11:1<15::AID-ADFM15>3.0.CO

[3]

2-A

[4] The influence of materials work function on the open circuit voltage of plastic solar cells [J].

Brabec, CJ ;

Cravino, A ;

Meissner, D ;

Sariciftci, NS ;

Rispens, MT ;

Sanchez, L ;

Hummelen, JC ;

Fromherz, T .

THIN SOLID FILMS, 2002, 403 :368-372

[5]

Frohne H, 2002, CHEMPHYSCHEM, V3, P795, DOI 10.1002/1439-7641(20020916)3:9<795::AID-CPHC795>3.0.CO

[6]

2-A

[7] Highly efficient p-i-n type organic photovoltaic devices [J].

Gebeyehu, D ;

Pfeiffer, M ;

Maennig, B ;

Drechsel, J ;

Werner, A ;

Leo, K .

THIN SOLID FILMS, 2004, 451 :29-32

[8] C-60 THIN-FILM TRANSISTORS [J].

HADDON, RC ;

PEREL, AS ;

MORRIS, RC ;

PALSTRA, TTM ;

HEBARD, AF ;

FLEMING, RM .

APPLIED PHYSICS LETTERS, 1995, 67 (01) :121-123

[9] Chemical potential pinning due to equilibrium electron transfer at metal/C-60-doped polymer interfaces [J].

Heller, CM ;

Campbell, IH .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (07) :3227-3231

[10] Bimolecular recombination in polymer/fullerene bulk heterojunction solar cells [J].

Koster, LJA ;

Mihailetchi, VD ;

Blom, PWM .

APPLIED PHYSICS LETTERS, 2006, 88 (05) :1-3

← 1 2 →