Investigation of Al back contacts and BSF formation by in situ TEM for silicon solar cells. (26th December 2012)

• Record Type: Journal Article
• Authors: Park, Sungeun; Song, Jooyoung; Tark, Sung Ju; Kim, Young Do; Choi, Chel‐jong; Kwon, Soonwoo; Yoon, Sewang; Son, Chang‐Sik; Kim, Donghwan
• Is Part Of: Progress in photovoltaics. Volume 22:Number 8(2014)
• Page Start: 863
• Page End: 869
• Publication Date: 2012-12-26
• Subjects: Solar cells -- Periodicals; Photovoltaic cells -- Periodicals; Solar power plants -- Periodicals; 621.31245
• DOI: 10.1002/pip.2322
• Languages: English
• ISSNs: 1062-7995

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <p>Back contacts for Si solar cells made by Al evaporation and screen printing Al paste were studied by transmission electron microscopy. Si was found to diffuse into the Al during heating. Si diffusion formed vacancies in the Si wafer and Al could then penetrate the Si wafer in spiked formations. The Al spikes retracted during cooling, leaving a doped back surface field region. Copyright © 2012 John Wiley &amp; Sons, Ltd.</p> </abstract>