| Photocurrent analysis of organic photovoltaic cells based on CuPc/C60 with Alq3 as a buffer layer |
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| 作者姓名： | 王娜娜 于军胜 臧月 蒋亚东 |
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| 作者单位： | State Key Laboratory of Electronic
Thin Films and Integrated Devices, School of Optoelectronic
Information, University of Electronic Science and Technology of
China (UESTC), Chengdu 610054, China;State Key Laboratory of Electronic
Thin Films and Integrated Devices, School of Optoelectronic
Information, University of Electronic Science and Technology of
China (UESTC), Chengdu 610054, China;State Key Laboratory of Electronic
Thin Films and Integrated Devices, School of Optoelectronic
Information, University of Electronic Science and Technology of
China (UESTC), Chengdu 610054, China;State Key Laboratory of Electronic
Thin Films and Integrated Devices, School of Optoelectronic
Information, University of Electronic Science and Technology of
China (UESTC), Chengdu 610054, China |
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| 基金项目： | Project supported by the National
Natural Science Foundation of China (NSFC) (Grant Nos.~60736005 and
60425101-1), the Foundation for Innovative Research Groups of the
NSFC (Grant No.~60721001), Provincial Project (Grant
No.~9140A02060609DZ0208), Program for New Century Excellent Talents
in University (Grant No.~NCET-06-0812), SRF for ROCS, SEM (Grant
No.~GGRYJJ08-05), and Young Excellent Project of Sichuan Province
(Grant No.~09ZQ026-074). |
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| 摘 要： | The performance of an organic photovoltaic(OPV) cell based on copper phthalocyanine CuPc/C60 with a tris(8-hydroxyquinolinato) aluminum(Alq3) buffer layer has been investigated.It was found that the power conversion efficiency of the device was 1.51% under illumination with an intensity of 100 mW/cm2,which was limited by a squareroot dependence of the photocurrent on voltage.The photocurrent-optical power density characteristics showed that the OPV cell had a significant space-charge limited photocurrent with a varied saturation voltage and a three quarters power dependence on optical power density.Also,the absorption spectrum was measured by a spectrophotometer,and the results showed that the additional Alq3 layer has a minor effect on photocurrent generation.
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| 关 键 词： | organic photovoltaic(OPV) cells buffer layer Alq3 space-charge limited current |
| 收稿时间： | 8/6/2009 12:00:00 AM |
| 修稿时间： | 9/7/2009 12:00:00 AM |
Photocurrent analysis of organic photovoltaic cells based on CuPc/C60 with Alq3 as a buffer layer |
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| Wang Na-N,YuJun-Sheng,Zang Yue and Jiang Ya-Dong.Photocurrent analysis of organic photovoltaic cells based on CuPc/C60 with Alq3 as a buffer layer[J].Chinese Physics B,2010,19(3):579-583. |
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| Authors: | Wang Na-N YuJun-Sheng Zang Yue and Jiang Ya-Dong |
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| Institution: | (State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China (UESTC), Chengdu 610054, China) |
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| Abstract: | The performance of an organic photovoltaic (OPV) cell based
on copper phthalocyanine CuPc/C60 with a
tris-(8-hydroxyquinolinato) aluminum (Alq3) buffer layer has
been investigated. It was found that the power conversion efficiency
of the device was 1.51% under illumination with an intensity of
100 mW/cm2, which was limited by a square-root dependence of
the photocurrent on voltage. The photocurrent--optical power density
characteristics showed that the OPV cell had a significant
space-charge limited photocurrent with a varied saturation voltage
and a three quarters power dependence on optical power density.
Also, the absorption spectrum was measured by a spectrophotometer,
and the results showed that the additional Alq3 layer has a minor
effect on photocurrent generation. |
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| Keywords: | organic photovoltaic (OPV) cells buffer layer Alq3 space-charge limited current |
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