Dresden 2014 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 29: Poster: Organic semiconductors and hybrid organic-inorganic heterostructures / Organic photovoltaics

HL 29.9: Poster

Montag, 31. März 2014, 17:00–20:00, P2

Measurement of the harvesting factor under realistic conditions for organic solar cells — •Trinath Reddy Pinnapa, Benjamin Oesen, Johannes Widmer, Rico Meerheim, Christian Koerner, and Karl Leo — Institut für Angewandte Photophysik, Technische Universität Dresden, 01062 Dresden, Germany

The efficiency of organic solar cells is usually measured under standard reporting conditions (SRC). The efficiency measurements carried out under SRC disregard the influence of varying parameters such as temperature, illumination intensity of sun, angle of incidence, and spectrum of the sunlight, although these varying parameters are very important for the overall energy harvesting. Thus, measurement conditions which are on par with real time data should be used to obtain precise efficiency values. To measure the harvesting factor, the realistic efficiency of cells for a period of one year, the accumulated solar irradiation energy and the efficiency at SRC are to be compared. This study is aimed at measuring the harvesting factor by investigating the performance of a pin structured organic solar cell under realistic conditions, then, the harvesting factor of organics are compared with an equivalent silicon cell. To understand the performance of organic solar cells, efficiency measurements of DCV5T-Me and F4-ZnPc donor cells with respect to changing illumination intensity and temperature are performed and then their respective harvesting factors are estimated.