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 61.42: Poster

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

Study of CIS/ZnO heterojunction solar cells by electrical characterization — •Jairo Cesar Nolasco, Dorothea Scheunemann, Holger Borchert, and Jürgen Parisi — Energy and Semiconductor Research Laboratory, Department of Physics, Carl von Ossietzky University of Oldenburg, D-26111, Germany

Colloidal quantum dot (CQD) photovoltaics, using solely solution-processed semiconductor nanocrystals as light-harvesting material, have seen rapid advances in recent years. The use of highly toxic Pb and Cd compounds used in absorber films, such as PbSe and PbS might limit the possible application of CQD photovoltaics. It has been demonstrated, that one less toxic alternative is the use of CuInS2 (CIS) as absorber material. Initial studies on CIS/ZnO heterojunction solar cells indicated that their performance is limited by an interface barrier. In this contribution, by using electrical characteristics (e.g., capacitance-voltage measurements) and device modeling, the existence of such heterojunction interface barrier is investigated.