DocumentCode :
2735673
Title :
Amorphous silicon sola cells on plastic based photonic structures
Author :
Pattnaik, Sambit ; Biswas, R. ; Dalal, V.L. ; Slafer, D. ; Ji, Jin
Author_Institution :
Dept. of Electr. & Comput. Engr., Iowa State Univ., Ames, IA, USA
fYear :
2010
fDate :
20-25 June 2010
Abstract :
Thin film solar cells are an increasingly important technology for photovoltaic energy conversion. For Si based thin films, it is necessary to increase absorption path in order to absorb as many photons as possible. In this paper, we show how one can use a 2 dimensional photonic structure to diffract light and significantly enhance light absorption. The 2D photonic structure consists of precise cylindrical holes fabricated in a polymer using nano-imprint technology. The polymer is then coated with silver and ZnO, and a-Si:H solar cells, both single junction and tandem junction, are deposited on the photonic structure. Significant enhancement in current is obtained in both structures, and quantum efficiency measurements confirm that the photonic structure is giving rise to enhanced absorption in the film.
Keywords :
amorphous semiconductors; hydrogen; light absorption; nanolithography; photonic band gap; plastics; polymers; semiconductor thin films; silicon; silver; solar cells; zinc compounds; 2-dimensional photonic structure; 2D photonic structure; Ag; Si:H; ZnO; amorphous silicon solar cell; light absorption; nanoimprint technology; photovoltaic energy conversion; plastic based photonic structure; polymer; quantum efficiency measurement; silver; tandem junction; thin film solar cell; Absorption; Junctions; Photonics; Photovoltaic cells; Silicon; Substrates; Zinc oxide;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2010 35th IEEE
Conference_Location :
Honolulu, HI
ISSN :
0160-8371
Print_ISBN :
978-1-4244-5890-5
Type :
conf
DOI :
10.1109/PVSC.2010.5614348
Filename :
5614348
Link To Document :
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