DataVXJournal of Photonics for EnergyPaper
journal article·2014-07-25Open access

Analysis of bulk heterojunction material parameters using lateral device structures

Eric Danielson, Zi-En Ooi, Kelly Liang, Joshua Morris, Christopher Lombardo, Ananth Dodabalapur

Journal of Photonics for Energy· Volume 4· Issue 1
Publisher pageOpen full text
Source abstract

Abstract

We review the key optoelectronic properties of lateral organic bulk heterojunction (BHJ) device structures with asymmetric contacts. These structures are used to develop a detailed model of charge transport and recombination properties within materials used for organic photovoltaics. They permit a variety of direct measurement techniques, such as nonlinear optical microscopy and in situ potentiometry, as well as photoconductive gain and carrier drift length studies from photocurrent measurements. We present a theoretical framework that describes the charge transport physics within these devices. The experimental results presented are in agreement with this framework and can be used to measure carrier concentrations, recombination coefficients, and carrier mobilities within BHJ materials. Lateral device structures offer a useful complement to measurements on vertical photovoltaic structures and provide a more complete and detailed picture of organic BHJ materials.
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Research context

Electronic materials

OpenAlex topics: Organic Electronics and Photovoltaics · Thin-Film Transistor Technologies · Conducting polymers and applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

University of Texas at Austin, Microelectronics Research Center, Austin, Texas 78758bUniversity of Texas at Austin, Materials Science and Engineering Program, Austin, Texas 78712

Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 3 Research Link, Singapore 117602, Republic of Singapore

University of Texas at Austin, Microelectronics Research Center, Austin, Texas 78758dUniversity of Texas at Austin, Department of Electrical and Computer Engineering, Austin, Texas 78712

University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, Texas 78759

Harvard School of Engineering and Applied Sciences, 29 Oxford Street, Cambridge, Massachusetts 02138

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