Microscopic description of the current-voltage characteristics of a bulk-heterojunction organic solar cell under illumination

被引：6

作者：

Takeuchi, Osamu ^{[1
]}

Takeuchi, Noriaki ^{[1
]}

Ochiai, Takahiro ^{[1
,2
]}

Kato, Hirokazu ^{[1
]}

Yoshida, Shoji ^{[1
]}

Shigekawa, Hidemi ^{[1
]}

机构：

[1] Univ Tsukuba, Fac Pure & Appl Sci, Tsukuba, Ibaraki 3058573, Japan

[2] TAKANO Co Ltd, Nagano 3994301, Japan

来源：

APPLIED PHYSICS EXPRESS | 2014年 / 7卷 / 02期

关键词：

ATOMIC-FORCE MICROSCOPY; ELECTRICAL CHARACTERIZATION; SPACE-CHARGE; POLYMER;

D O I：

10.7567/APEX.7.021602

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Measurement of the local current-voltage (J-V) characteristics of a MDMO-PPV:PCBM bulk-heterojunction (BHJ) solar cell by using light-modulated scanning tunneling spectroscopy (LM-STS) revealed that the open-circuit voltage (V-OC) differs from one region to another. Consequently, when the bias voltage is set near V-OC, the generated photocurrent in some regions is internally lost in other regions through leakage. In the same manner, the external J-V characteristics of a BHJ solar cell device results from numerous parallelly connected local solar cells. LM-STS allows us to interpret the external J-V characteristics of a device in terms of the characteristics of the local solar cells. (C) 2014 The Japan Society of Applied Physics

引用

页数：4

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