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Title:
 
ZnO Nanocolumns Arrays for Thin Film Amorphous Si, Tandem a-Si/a-Si and a-Si/μc Si Solar Cells
 
Author(s):
 
N. Neykova, K. Hruska, A. Purkrt, Z. Remes, J. Holovsky, A. Poruba, M. Vanecek
 
Keywords:
 
Thin Film Silicon Solar Cell, ZnO Nanocolumn, Photothermal Deflection Spectroscopy
 
Topic:
 
MATERIAL STUDIES, NEW CONCEPTS, ULTRA-HIGH EFFICIENCY AND SPACE TECHNOLOGY
Subtopic: New Materials and Concepts for Cells
Event: 28th European Photovoltaic Solar Energy Conference and Exhibition
Session: 1AV.3.9
 
Pages:
 
399 - 402
ISBN: 3-936338-33-7
Paper DOI: 10.4229/28thEUPVSEC2013-1AV.3.9
 
Price:
 
 
0,00 EUR
 
Document(s): paper, poster
 

Abstract/Summary:


We report on hydrothermal growth of single (or multi)-crystalline ZnO nanocolumns arrays, perpendicularly oriented towards the TCO (transparent conductive oxide) substrate. In order to get well defined spacing and arrangement over the area, we used electron beam lithography. Vertically aligned ZnO nanocolumns were grown in an aqueous solution of zinc nitrate hexahydrate and hexamethylenetetramine at 75÷95 ºC, with the growth rate 0.5÷1μm/h. The morphology of the nanostruct ures was visualized by scanning electron microscopy (Raith e-LiNE). The electrical, optical and surface properties of ZnO nanocolumns, which are decisive for a high solar cell efficiency, were investigated by optical and photothermal spectroscopy. We will present our results on optimization of nanostructured TCO/glass substrates being designed for very thin amorphous Si cells and for tandem a-Si/a-Si and a-Si/microcrystalline Si solar cells and report on influence of hydrogen and oxygen plasma treatment.