Zinc oxide nanowire arrays for photovoltaic and light-emitting devices

Bita Janfeshan; Bahareh Sadeghimakki; Navid M. S. Jahed; Siva Sivoththaman

doi:10.1117/12.2004601

25 March 2013 Zinc oxide nanowire arrays for photovoltaic and light-emitting devices

Bita Janfeshan, Bahareh Sadeghimakki, Navid M. S. Jahed, Siva Sivoththaman

Proceedings Volume 8620, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II; 86201Z (2013) https://doi.org/10.1117/12.2004601
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

Knowledge of carrier transfer, in quantum dot sensitized solar cells, is the key to engineering the device structure and architecture optimization. In this work, Zinc oxide (ZnO) nanowire (NW) arrays were synthesized on glass wafers and on GaN thin films for application in photovoltaic and light-emitting devices. The nanowires grown on glass wafers were incorporated with CdSe/ZnS quantum dots (QD) and their steady state and lifetime photoluminescence (PL) were studied to investigate the feasibility of electron transfer from excited QDs to ZnO NWs. The results provide an indication that the injected electrons, from excited high quantum efficiency QDs, live longer and hence facilitate electron transport without undergoing non-radiative recombination at surface trap states. Morphology and optical properties of the ZnO nanowires on GaN film were also studied for application in light-emitting devices.

Citation Download Citation

Bita Janfeshan, Bahareh Sadeghimakki, Navid M. S. Jahed, and Siva Sivoththaman "Zinc oxide nanowire arrays for photovoltaic and light-emitting devices", Proc. SPIE 8620, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II, 86201Z (25 March 2013); https://doi.org/10.1117/12.2004601

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