Evaluation of the characteristics of the organic thin film solar cell fabricated by poly[4,8-bis(2-ethylhexyloxy)-benzo[1,2-b:4,5-b']dithiophene-2,6-diyl-alt-(4-octanoyl-5-fluoro-thieno[3,4-b]thiophene-2-carboxylate)-2,6-diyl] (PBDTTT-CF)/ [6,6]-phenyl-C71-butyric acid methyl ester (PCBM)

Tatsushi Komura; Kannappan Santhakumar; Palanisamy Kumar; Paik-Kyun Shin; Kenzo Kojima; Shizuyasu Ochiai

doi:10.1117/12.928681

13 September 2012 Evaluation of the characteristics of the organic thin film solar cell fabricated by poly[4,8-bis(2-ethylhexyloxy)-benzo[1,2-b:4,5-b']dithiophene-2,6-diyl-alt-(4-octanoyl-5-fluoro-thieno[3,4-b]thiophene-2-carboxylate)-2,6-diyl]/[6,6]-phenyl-C₇₁-butyric acid methyl ester

Tatsushi Komura, Kannappan Santhakumar, Palanisamy Kumar, Paik-Kyun Shin, Kenzo Kojima, Shizuyasu Ochiai

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Proceedings Volume 8477, Organic Photovoltaics XIII; 84771A (2012) https://doi.org/10.1117/12.928681
Event: SPIE Organic Photonics + Electronics, 2012, San Diego, California, United States

Abstract

Solar energy is the most abundant and reliable source of energy and we have to provide for the multi-terawatt challenge we are facing. In recent years organic photovoltaic's have become one of the most interesting research areas due to their potential towards a cheap and broad applicability. We report the optical and electrical properties of PBDTTT-CF: PC₇₁BM bulk hetero-junction (BHJ) solar cell. The devices were prepared by spin coating technique with the device structure of Glass/ITO/PEDOT: PSS/Active layer/Al. The ratio of polymer donor and fullerene acceptor varied between 1:1 to 1:4. Optical absorption spectroscopy measurements of the films indicated absorption peaks in the range from 500-800 nm which were attributed to PBDTTT-CF. The surface morphology of the active layers deposited was examined using Atomic Force Microscopy. The current density (J)-voltage (V) characteristics of the PBDTTT-CF: PC₇₁BM bulk hetero-junction solar cells were studied. The devices fabricated using the selective active layer show overall power conversion efficiency of 3%.

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Tatsushi Komura, Kannappan Santhakumar, Palanisamy Kumar, Paik-Kyun Shin, Kenzo Kojima, and Shizuyasu Ochiai "Evaluation of the characteristics of the organic thin film solar cell fabricated by poly[4,8-bis(2-ethylhexyloxy)-benzo[1,2-b:4,5-b']dithiophene-2,6-diyl-alt-(4-octanoyl-5-fluoro-thieno[3,4-b]thiophene-2-carboxylate)-2,6-diyl]/[6,6]-phenyl-C₇₁-butyric acid methyl ester", Proc. SPIE 8477, Organic Photovoltaics XIII, 84771A (13 September 2012); https://doi.org/10.1117/12.928681

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KEYWORDS

Solar cells

Absorption

Solar energy

Polymers

Atomic force microscopy

Composites

Fullerenes

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