Berlin 2015 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 61: Posters III (Organic-inorganic perovskite semiconductors; Organic photovoltaics and electronics; Photovoltaics; Energy science; New materials and concepts)

HL 61.34: Poster

Wednesday, March 18, 2015, 15:00–20:00, Poster F

Development and Characterization of an Ultrathin Hybrid p-n Interface for Solar Cell Applications — •Mahfujur Rahaman, Raul D. Rodriguez, Jacek Gasiorowski, and Dietrich R. T. Zahn — Halbleiterphysik,Technische Universität Chemnitz, Germany

In this work ultra-thin hybrid p-n interfaces were developed and characterized for photovoltaic application using inorganic 2-dimensional p-type GaSe as well as F16CoPc and PCBM n-type organic semiconductors. Due to the layered structure of GaSe, it is possible to deposit nano flakes by means of mechanical exfoliation. The F16CoPc thin film was deposited by thermal evaporation and PCBM by spin coating on a metal substrate. The properties of p-n interfaces were determined using a wide spectrum of techniques. Optical properties were characterized using spectroscopic ellipsometry (SE) and photoluminescence, while the surface morphology and electrical studies were performed using atomic force microscopy (AFM) and Kelvin probe force microscopy (KPFM) methods. The photovoltaic effect was investigated by means of I-V measurements in the dark and under illumination using 514.7 nm laser excitation.