Organic photovoltaic cells with near infrared absorption spectrum

被引：87
作者：
Dai, Jiguang [1 ]
Jiang, Xiaoxia [1 ]
Wang, Haibo [1 ]
Yan, Donghang [1 ]
机构：
[1] Chinese Acad Sci, Changchun Inst Appl Chem, Grad Sch, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
来源：
APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 25期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1063/1.2824836
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Organic photovoltaic cells with a strong absorption spectrum in the near infrared region were fabricated with the structure of indium tin oxide (ITO)/zinc phthalocynine (ZnPc)/lead phthalocynine (PbPc)/C-60/Al. PbPc has a broad and strong absorption, while the organic films of PbPc/C-60 showed an additional new absorption peak at 900 nm. The absorption in the near infrared region can harvest more photons to invert into photocurrent. Moreover, the introduction of ZnPc thin layer between ITO and PbPc further improved the new absorption peak and the collection of hole carriers at the electrode ITO, which increased the power conversion efficiencies to 1.95% and short-circuit current density to 9.1 mA/cm(2) under AM 1.5 solar spectrum. (c) 2007 American Institute of Physics.
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