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Appl Opt. 2010 Mar 20;49(9):1662-5. doi: 10.1364/AO.49.001662.

Impact of different Na-incorporating methods on Cu(In,Ga)Se2 thin film solar cells with a low-Na substrate.

Author information

1
School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, No 516. Jungong Road, Shanghai, 200093, China. liebe_mann@hotmail.com

Abstract

As a kind of Na-incorporating control method, NaF co-evaporation or soda-lime glass thin films (SLGTFs) are useful to improve the photovoltaic performance of Cu(In,Ga)Se(2) (CIGS) cells fabricated on low-Na substrates. X-ray diffraction (XRD) patterns and scanning electron microscope pictures demonstrate that the grain size of CIGS thin film is reduced with the addition of Na. In addition, a variance of the preferred orientation is found by XRD patterns in terms of SLGTF samples. By a use of 100 nm thick SLGTF as a Na source, the best CIGS solar cell with an efficiency of 13.42% has been obtained.

PMID:
20300164

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