Soshi Nakami

Osaka Prefecture University

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Takashi Kobayashi

Osaka Prefecture University

Takashi Nagase

Osaka Prefecture University

Hiroyoshi Naito

Tokyo Metropolitan University

Tatsuhiko Narioka

Osaka Prefecture University

Akitsugu Niwa

Osaka Prefecture University

Cooperative Institutions

Osaka Prefecture University

Railway Technical Research Institute

National Institute of Technology, Numazu College

Toshiba (Japan)

Shizuoka Institute of Science and Technology

National Institute of Technology

Toyohashi University of Technology

University of Electro-Communications

National Yang Ming Chiao Tung University

Nagoya University

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A relationship of optimized film thickness and carrier lifetime in inverted organic photovoltaics.

The Japan Society of Applied Physics (2016)

Soshi Nakami Takashi Kobayashi Takashi Nagase Hiroyoshi Naito

Organic semiconductor

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Relation between active-layer thickness and power conversion efficiency in P3HT:PCBM inverted organic photovoltaics

Journal of Physics Conference Series (2017)

Soshi Nakami Tatsuhiko Narioka Takashi Kobayashi Takashi Nagase Hiroyoshi Naito

The dependence of active-layer thickness on the power conversion efficiency (PCE) of inverted organic photovoltaics (OPVs) based on poly(3-hexylthiphene) and [6,6]-phenyl-C61-butyric acid methyl ester was investigated. When PCEs were measured immediately after device fabrication, the optimum thickness was ~100 nm. It was, however, found that thick OPVs exhibit higher PCEs a few months later, whereas thin OPVs simply degraded with time. Consequently, the optimum thickness changed with time. Considering this fact, we discuss the relationship between the active-layer thickness and PCE.

Active layer

10.1088/1742-6596/924/1/012009

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Electronic properties of all-polymer solar cells investigated using photoinduced absorption spectroscopy

The Japan Society of Applied Physics (2016)

Soshi Nakami Tatsuhiko Narioka Akitsugu Niwa Takashi Nagase Takashi Kobayashi

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Study of trapping states in organic solar cells using photoinduced absorption spectroscopy

The Japan Society of Applied Physics (2015)

Soshi Nakami

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