Development of low-cost high-efficiency commercial-ready advanced silicon solar cells

Silicon solar cells;Ion implantation;Selective emitter;Passivation;Passivated emitter and rear cell;Rear reflector;Light induced degradation;Localrear contacts;Fine line printing;Screen printing

Lai, Jiun-Hong ; Rohatgi, Ajeet Electrical and Computer Engineering Melkote, Shreyes N. Chang, Gee-Kung Gaylord, Thomas Begovic, Miroslav ; Rohatgi, Ajeet

University:Georgia Institute of Technology

Department:Electrical and Computer Engineering

关键词: Silicon solar cells;    Ion implantation;    Selective emitter;    Passivation;    Passivated emitter and rear cell;    Rear reflector;    Light induced degradation;    Localrear contacts;    Fine line printing;    Screen printing;   

Others  :  https://smartech.gatech.edu/bitstream/1853/52234/1/LAI-DISSERTATION-2014.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

The objective of the research in this thesis is to develop manufacturable high-efficiency silicon solar cells at low-cost through advanced cell design and technological innovations using industrially feasible processes and equipment on commercial grade Czochralski (Cz) large-area (239 cm2) silicon wafers. This is accomplished by reducing both the electrical and optical losses in solar cells through fundamental understanding, applied research and demonstrating the success by fabricating large-area commercial ready cells with much higher efficiency than the traditional Si cells. By developing and integrating multiple efficiency enhancement features, namely low-cost high sheet resistance homogeneous emitter, optimized surface passivation, optimized rear reflector, back line contacts, and improved screen-printing with narrow grid lines, 20.8% efficient screen-printed PERC (passivated emitter and rear cell) solar cells were achieved on commercial grade 239 cm2 p-type Cz silicon wafers.