Effect of the vertical composition gradient of active layer on the performance of bulk-heterojunction organic photovoltaic cell

被引：8

作者：

Nam, Young Min ^{[1
,2
]}

Huh, June ^{[3
]}

Jo, Won Ho ^{[1
,2
]}

机构：

[1] Seoul Natl Univ, WCU Hybrid Mat Program, Seoul 151742, South Korea

[2] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151742, South Korea

[3] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120740, South Korea

来源：

JOURNAL OF APPLIED PHYSICS | 2011年 / 110卷 / 11期

关键词：

POLYMER SOLAR-CELLS; THIN-FILMS; EFFICIENCY; BLENDS; POLY(3-HEXYLTHIOPHENE); RECOMBINATION; MORPHOLOGY; INTERFACE; DIFFUSION; OXIDE;

D O I：

10.1063/1.3666061

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A computational model is developed to investigate the effect of vertical composition gradient on the photovoltaic properties of organic photovoltaic cell based on poly (3-hexylthiophene) (P3HT) and [6,6]-phenyl C-61-butyric acid methyl ester (PCBM). When the photovoltaic properties of model devices with systematic variation of vertical composition distribution are calculated by using this model, it is found that the efficiency increases almost linearly as the concentrations of P3HT and PCBM become richer near anode and cathode, respectively. The larger exciton generation near anode due to enrichment of P3HT near the anode contributes mainly to an increase of the device efficiency by compensating the lower hole mobility of P3HT with shorter pathway to the anode. (C) 2011 American Institute of Physics. [doi:10.1063/1.3666061]

引用

页数：5

共 38 条

[1]

Azzam M.A., 1977, Ellipsometry and Polarized Light

[2] Modeling the current-voltage characteristics of bilayer polymer photovoltaic devices [J].

Barker, JA ;

Ramsdale, CM ;

Greenham, NC .

PHYSICAL REVIEW B, 2003, 67 (07)

[3] ELECTRIC-FIELD ASSISTED DISSOCIATION OF CHARGE-TRANSFER STATES AS A MECHANISM OF PHOTOCARRIER PRODUCTION [J].

BRAUN, CL .

JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (09) :4157-4161

[4] Calculation of various physics constants in heterogenous substances I Dielectricity constants and conductivity of mixed bodies from isotropic substances [J].

Bruggeman, DAG .

ANNALEN DER PHYSIK, 1935, 24 (07) :636-664

[5] Morphology evolution via self-organization and lateral and vertical diffusion in polymer: fullerene solar cell blends [J].

Campoy-Quiles, Mariano ;

Ferenczi, Toby ;

Agostinelli, Tiziano ;

Etchegoin, Pablo G. ;

Kim, Youngkyoo ;

Anthopoulos, Thomas D. ;

Stavrinou, Paul N. ;

Bradley, Donal D. C. ;

Nelson, Jenny .

NATURE MATERIALS, 2008, 7 (02) :158-164

[6] Polymer solar cells with enhanced open-circuit voltage and efficiency [J].

Chen, Hsiang-Yu ;

Hou, Jianhui ;

Zhang, Shaoqing ;

Liang, Yongye ;

Yang, Guanwen ;

Yang, Yang ;

Yu, Luping ;

Wu, Yue ;

Li, Gang .

NATURE PHOTONICS, 2009, 3 (11) :649-653

[7] Solvent additives for tuning the photovoltaic properties of polymer-fullerene solar cells [J].

De Sio, Antonietta ;

Modena, Thomas ;

Huber, Ralph ;

Parisi, Juergen ;

Neyshtadt, Shany ;

Deschler, Felix ;

Da Como, Enrico ;

Esposito, Salvatore ;

von Hauff, Elizabeth .

SOLAR ENERGY MATERIALS AND SOLAR CELLS, 2011, 95 (12) :3536-3542

[8] Improving the Reproducibility of P3HT:PCBM Solar Cells by Controlling the PCBM/Cathode Interface [J].

de Villers, Bertrand Tremolet ;

Tassone, Christopher J. ;

Tolbert, Sarah H. ;

Schwartz, Benjamin J. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (44) :18978-18982

[9] Polaron recombination in pristine and annealed bulk heterojunction solar cells [J].

Deibel, C. ;

Baumann, A. ;

Dyakonov, V. .

APPLIED PHYSICS LETTERS, 2008, 93 (16)

[10] Angle dependence of external and internal quantum efficiencies in bulk-heterojunction organic solar cells [J].

Dennler, Gilles ;

Forberich, Karen ;

Scharber, Markus C. ;

Brabec, Christoph J. ;

Tomis, Igor ;

Hingerl, Kurt ;

Fromherz, Thomas .

JOURNAL OF APPLIED PHYSICS, 2007, 102 (05)

← 1 2 3 4 →