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Enhance Photocurrent of Cu/n-Cu2O/p-CuI Solid State Solar Cell using Bamboo Activated Carbon as Upper-electrode

Journal of Scientific and Technical Research

Volume 6 Issue 2

Published: 2016
Author(s) Name: N. W. P. S. Perera, R. D. A. A. Rajapaksha, C. A. N. Fernando, S. A. Ariadurai, M. V. W. Samarakody | Author(s) Affiliation:
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Bamboo is a natural vegetable fibre originated from the tropical and sub-tropical countries. In this research, alkaline-bio scoured raw bamboo fibre powder was subjected to alkaline one step pyrolysis activation by using KOH. The bamboo carbon powder was fed into a tube furnace with a ramping rate of 10°C min-1 until the temperature reached at 360°C and dwell time 15 min for N2 atmosphere. Subsequently they were cooled to room temperature. A thin film of n-Cu2O was fabricated by boiling a well cleaned Copper sheet in a 5x10-3M CuSO4 solution inside an ultrasonic bath at 60°C for 50 min. There after thin layer of colloidal CuI was deposited on the n-Cu2O layer. BAC was placed on n-Cu2O/p-CuI and ITO conductive glass plate was placed to fabricate Cu/Cu2O/BAC/ITO solid state photovoltaic cell. BAC acts as an upper electrode, separate photo generated charge carriers and enhanced photo-current. Mean Particle size distribution curves, Absorption spectra, Photo-current action spectra and time development of photo-current were used from this study.

Keywords: Bamboo Activated Carbon (BAC), n-Cu2O, p-CuI, Thin Film Solid State Solar Cell

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