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http://dx.doi.org/10.4313/JKEM.2005.18.12.1148

Properties in Organic Photovoltaic Cell Depending on the Exciton Blocking Layer Thickness  

Oh, Hyun-Seok (광운대학교 전기공학과)
Lee, Joon-Ung (광운대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.18, no.12, 2005 , pp. 1148-1151 More about this Journal
Abstract
Photovoltaic effects in organic solar cell were studied in a cell configuration of ITO/PEDOT:PSS/CuPc(20 nm)/$C_{60}$(40 nm)/BCP/Al(150 nm) at room temperature. Here, the BCP layer works as an exciton blocking layer. The exciton blocking layer must transport electrons from the acceptor layer to the metal cathode with minimal increase in the total cell series resistance and should absorb damage during cathode deposition. Therefore, a proper thickness of the exciton blocking layer is required for an optimized photovoltaic cell. Several thicknesses of BCP were made between $C_{60}$ and Al. And we obtained characteristic parameters such as short-circuit current, open-circuit voltage, and power conversion efficiency of the device under the illumination of AM 1.5.
Keywords
Photovoltaic effects; Organics; Exciton blocking layer; BCP; Power conversion efficiency;
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