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Chin. Phys. B, 2009, Vol. 18(5): 02096    DOI: 10.1088/1674-1056/18/5/061
CROSS DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY Prev   Next  

Effects of optical interference and annealing on the performances of poly (3-hexylthiophene): fullerene based solar cells

Zhang Chun-Fua, You Hai-Longb
a Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576; b School Of Microelectronics, Xidian University, Xi'an 710071, China;Key Laboratory of Wide Band-Gap Semiconductor Materials and Devices, Xi'an 710071, China
Abstract  In this paper, the effects of optical interference and annealing on the performance of P3HT:PCBM based organic solar cells are studied in detail. Due to the optical interference effect, short circuit current density (JSC) shows obvious oscillatory behaviour with the variation of active layer thickness. With the help of the simulated results, the devices are optimized around the first two optical interference peaks. It is found that the optimized thicknesses are 80 and 208 nm. The study on the effect of annealing on the performance indicates that post-annealing is more favourable than pre-annealing. Based on post-annealing, different annealing temperatures are tested. The optimized annealing condition is 160*
Keywords:  annealing      organic solar cell      optical interference  
Received:  01 September 2008      Revised:  24 November 2008      Published:  20 May 2009
PACS:  84.60.Jt (Photoelectric conversion)  
  85.65.+h (Molecular electronic devices)  
  61.72.Cc (Kinetics of defect formation and annealing)  

Cite this article: 

You Hai-Long, Zhang Chun-Fu Effects of optical interference and annealing on the performances of poly (3-hexylthiophene): fullerene based solar cells 2009 Chin. Phys. B 18 02096

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