The fabrication and analysis of a PbS nanocrystal:C60 bilayer hybrid photovoltaic system

被引：20

作者：

Dissanayake, D. M. N. M. ^{[1
]}

Hatton, R. A. ^{[2
]}

Lutz, T. ^{[3
]}

Curry, R. J. ^{[4
]}

Silva, S. R. P. ^{[4
]}

机构：

[1] Univ Michigan, Solid State Elect Lab, Ann Arbor, MI 48109 USA

[2] Univ Warwick, Dept Chem, Coventry CV4 7AL, W Midlands, England

[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AY, England

[4] Univ Surrey, Adv Technol Inst, Guildford GU2 7XH, Surrey, England

来源：

NANOTECHNOLOGY | 2009年 / 20卷 / 24期

基金：

英国工程与自然科学研究理事会;

关键词：

OPEN-CIRCUIT VOLTAGE; PHOTODETECTORS; EFFICIENT;

D O I：

10.1088/0957-4484/20/24/245202

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A near-infrared sensitive hybrid photovoltaic system between PbS nanocrystals (PbS-NCs) and C-60 is demonstrated. Up to 0.44% power conversion efficiency is obtained under AM1.5G with a short circuit current density (J(sc)) of 5mA cm(-2) when the PbS-NC layer is treated in anhydrous methanol. The observed Jsc is found be approximately one-third of the maximum expected from this hybrid configuration, indicating the potential for further optimization. Crucial for device operation, a smooth film of nanocrystals is seen to form on the hole transporting poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer deposited on the transparent electrode, facilitated through an ionic interaction between nanocrystal capping ligands and the PEDOT:PSS. The formation of the open circuit voltage in this system is seen to be influenced by an interfacial dipole formed at the hole-extracting electrode, providing insights for further optimization.

引用

页数：5

共 25 条

[1] Efficient laser textured nanocrystalline silicon-polymer bilayer solar cells [J].

Adikaari, A. A. D. T. ;

Dissanayake, D. M. N. M. ;

Hatton, R. A. ;

Silva, S. R. P. .

APPLIED PHYSICS LETTERS, 2007, 90 (20)

[2]

Brabec CJ, 2001, ADV FUNCT MATER, V11, P374, DOI 10.1002/1616-3028(200110)11:5<374::AID-ADFM374>3.0.CO

[3]

2-W

[4] Size-dependent extinction coefficients of PbS quantum dots [J].

Cademartiri, Ludovico ;

Montanari, Erica ;

Calestani, Gianluca ;

Migliori, Andrea ;

Guagliardi, Antonietta ;

Ozin, Geoffrey A. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2006, 128 (31) :10337-10346

[5] The use of charge transfer interlayers to control hole injection in molecular organic light emitting diodes [J].

Day, SR ;

Hatton, RA ;

Chesters, MA ;

Willis, MR .

THIN SOLID FILMS, 2002, 410 (1-2) :159-166

[6] A PbS nanocrystal-C60 photovoltaic device for infrared light harvesting [J].

Dissanayake, D. M. N. M. ;

Hatton, Ross A. ;

Lutz, Thierry ;

Giusca, Cristina E. ;

Curry, Richard J. ;

Silva, S. R. P. .

APPLIED PHYSICS LETTERS, 2007, 91 (13)

[7] Measurement and validation of PbS nanocrystal energy levels [J].

Dissanayake, D. M. N. M. ;

Lutz, T. ;

Curry, R. J. ;

Silva, S. R. P. .

APPLIED PHYSICS LETTERS, 2008, 93 (04)

[8]

Hatton RA, 2001, THIN SOLID FILMS, V394, P292, DOI 10.1016/S0040-6090(01)01191-9

[9] Colloidal PbS nanocrystals with size-tunable near-infrared emission: Observation of post-synthesis self-narrowing of the particle size distribution [J].

Hines, MA ;

Scholes, GD .

ADVANCED MATERIALS, 2003, 15 (21) :1844-1849

[10] Hybrid nanorod-polymer solar cells [J].

Huynh, WU ;

Dittmer, JJ ;

Alivisatos, AP .

SCIENCE, 2002, 295 (5564) :2425-2427

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