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Electronic Organic Thin Film Devices for Solar Energy Harvesting 北川, 雅彦 キタガワ, マサヒコ Kitagawa, Masahiko キタガワ, マサヒコ 注があるものを除き、この著作物は日本国著作権法により保護されています。 / This work is protected under Japanese Copyright Law unless otherwise noted. Organic Semiconductor Thin Film Device Fabrication Nano Technology Characterization and Properties Solar Cells Efficiency Cell Design pin multilayer dye-doping intermediate level Organic Semiconductor Thin Film Device Fabrication Nano Technology Characterization and Properties Solar Cells Efficiency Cell Design pin multilayer dye-doping intermediate level We have established fabrication process of a multi-layered P3HT/PCBM based bulk-heterojunction photovoltaic cells with the P3HT layer as the hole transport layer and the PCBM layer as the electron transport layer between the electrodes and a blended P3HT/PCBM layer in order to widen the photon harvesting layer. Current density has increased about 1 mA/cm2 by the insertion of P3HT layer and the resulting conversion efficiency has been improved about 20% compared with the single layer device. The device with a cm-scale active area with an efficiency of ~1% has been fabricated by the developed method. We have fabricated the P3HT/PCBM p-i-n BHJ cells for the first time. The device structure was ITO/MoO3/P3HT(p)/P3HT:PCBM(i)/PCBM(n)/Ag. In the as-fabricated cells, the open circuit voltage of p-i-n BHJ cells with PCBM concentration 10 mg/ml, 15 mg/ml and 20 mg/ml were 0.56V, 0.71V and 0.74V respectively, and increased compared with 0.50V in the ordinary BHJ (i-type) cell. After post annealing, the short-circuit current density of p-i-n BHJ cell with PCBM concentration 10 mg/ml has been improved by 20% compared with the ordinary i-type cell and the power conversion efficiency has been also improved by 10% up to over 2%. We have discussed the molecular distribution within the organic layers. We have demonstrated that the organic p-i-n BHJ structure is useful to enhance and optimize power conversion efficiency of the organic thin film BHJ cells. 鳥取大学大学院工学研究科 2016-12-26 eng departmental bulletin paper VoR https://repository.lib.tottori-u.ac.jp/records/3136 鳥取大学大学院工学研究科／工学部研究報告. 2016, 47, 77-84 AN00174610 03858596 鳥取大学大学院工学研究科／工学部研究報告 Reports of the Graduate School/Faculty of Engineering, Tottori University 47 77 84 https://repository.lib.tottori-u.ac.jp/record/3136/files/rgsfe47_77.pdf application/pdf 2.4 MB 2017-01-26