A PbS nanocrystal-C60 photovoltaic device for infrared light harvesting

被引：49

作者：

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

Hatton, Ross A. ^{[1
]}

Lutz, Thierry ^{[1
]}

Giusca, Cristina E. ^{[1
]}

Curry, Richard J. ^{[1
]}

Silva, S. R. P. ^{[1
]}

机构：

[1] Univ Surrey, Adv Technol Inst, Nanoelect Ctr, Guildford GU2 7XH, Surrey, England

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 13期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1063/1.2790730

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

PbS nanocrystal (nc-PbS)-C-60 photovoltaic devices are demonstrated, in which nc-PbS function as electron donors, showing infrared photosensitivity up to 1600 nm. Annealing nc-PbS is proved to remove capping oleic acid ligands, studied using x-ray photoelectron spectroscopy, significantly improving the short circuit current, open circuit voltage, and fill factor. The device performance is rationalized by quantum confinement in nc-PbS and energy level alignment at the heterojunction based on direct measurements of nc-PbS ionization potential using ultraviolet photoelectron spectroscopy. (c) 2007 American Institute of Physics.

引用

页数：3

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