Jeong, Yonkil and Kim, Chae-Woong and Park, Dong-Won and Jung, Seung Chul and Lee, Jongjin and Shim, Hee-Sang (2011) Field modulation in Na-incorporated Cu(In,Ga)Se2 (CIGS) polycrystalline films influenced by alloy-hardening and pair-annihilation probabilities. NANOSCALE RESEARCH LETTERS, 6 (1). pp. 1-6. ISSN 1931-7573 (Print) 1556-276X (Online)
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Official URL: http://www.nanoscalereslett.com/content/6/1/581
Abstract
The influence of Na on Cu(In,Ga)Se2 (CIGS) solar cells was investigated. A gradient profile of the Na in the CIGS absorber layer can induce an electric field modulation and significantly strengthen the back surface field effect. This field modulation originates from a grain growth model introduced by a combination of alloy-hardening and pair-annihilation probabilities, wherein the Cu supply and Na diffusion together screen the driving force of the grain boundary motion (GBM) by alloy hardening, which indicates a specific GBM pinning by Cu and Na. The pair annihilation between the ubiquitously evolving GBMs has a coincident probability with the alloy-hardening event.
| Item Type: | Article |
|---|---|
| Subjects: | Material Science > Nanofabrication processes and tools |
| ID Code: | 11587 |
| Deposited By: | M T V |
| Deposited On: | 05 Jan 2012 10:32 |
| Last Modified: | 05 Jan 2012 10:32 |
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