IndiumV3, Chine, Analysis, bibRecord, 000153

Photocurrent generation through electron-exciton interaction at the organic semiconductor donor/acceptor interface

Identifieur interne : 000153 ( Chine/Analysis ); précédent : 000152; suivant : 000154

Photocurrent generation through electron-exciton interaction at the organic semiconductor donor/acceptor interface

Auteurs : RBID : Pascal:13-0330485

Descripteurs français

Pascal (Inist)
- Interaction électronique, Semiconducteur, Interface.

English descriptors

KwdEn :
- Electron interaction, Interface, Semiconductor materials.

Abstract

In this work, we report our effort to understand the photocurrent generation that is contributed via electron-exciton interaction at the donor/acceptor interface in organic solar cells (OSCs). Donor/ acceptor bi-layer heterojunction OSCs, of the indium tin oxide/copper phthalocyanine (CuPc)/fullerene (C₆₀)/molybdenum oxide/Al type, were employed to study the mechanism of photocurrent generation due to the electron-exciton interaction, where CuPc and C₆₀ are the donor and the acceptor, respectively. It is shown that the electron-exciton interaction and the exciton dissociation processes co-exist at the CuPc/C₆₀ interface in OSCs. Compared to conventional donor/acceptor bi-layer OSCs, the cells with the above configuration enable holes to be extracted at the C₆₀ side while electrons can be collected at the CuPc side, resulting in a photocurrent in the reverse direction. The photocurrent thus observed is contributed to primarily by the charge carriers that are generated by the electron-exciton interaction at the CuPc/C₆₀ interface, while charges derived from the exciton dissociation process also exist at the same interface. The mechanism of photocurrent generation due to electron-exciton interaction in the OSCs is further investigated, and it is manifested by the transient photovoltage characteristics and the external quantum efficiency measurements.

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Le document en format XML

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<author><name>LIJIA CHEN</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy</s1>
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<country>République populaire de Chine</country>
<wicri:noRegion>Chongqing Key Laboratory for Advanced Materials and Technologies of Clean Energy</wicri:noRegion>
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<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Institute for Clean Energy and Advanced Materials, Southwest University</s1>
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<author><name>QIAOMING ZHANG</name>
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<country>République populaire de Chine</country>
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<author><name>YANLIAN LEI</name>
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<author><name>FURONG ZHU</name>
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<author><name>BO WU</name>
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<author><name>GUOXI NIU</name>
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<author><name>ZUHONG XIONG</name>
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<front><div type="abstract" xml:lang="en">In this work, we report our effort to understand the photocurrent generation that is contributed via electron-exciton interaction at the donor/acceptor interface in organic solar cells (OSCs). Donor/ acceptor bi-layer heterojunction OSCs, of the indium tin oxide/copper phthalocyanine (CuPc)/fullerene (C<sub>60</sub>
)/molybdenum oxide/Al type, were employed to study the mechanism of photocurrent generation due to the electron-exciton interaction, where CuPc and C<sub>60</sub>
 are the donor and the acceptor, respectively. It is shown that the electron-exciton interaction and the exciton dissociation processes co-exist at the CuPc/C<sub>60</sub>
 interface in OSCs. Compared to conventional donor/acceptor bi-layer OSCs, the cells with the above configuration enable holes to be extracted at the C<sub>60</sub>
 side while electrons can be collected at the CuPc side, resulting in a photocurrent in the reverse direction. The photocurrent thus observed is contributed to primarily by the charge carriers that are generated by the electron-exciton interaction at the CuPc/C<sub>60</sub>
 interface, while charges derived from the exciton dissociation process also exist at the same interface. The mechanism of photocurrent generation due to electron-exciton interaction in the OSCs is further investigated, and it is manifested by the transient photovoltage characteristics and the external quantum efficiency measurements.</div>
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Photocurrent generation through electron-exciton interaction at the organic semiconductor donor/acceptor interface

Photocurrent generation through electron-exciton interaction at the organic semiconductor donor/acceptor interface

Descripteurs français

English descriptors

Abstract

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Links to Exploration step

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

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