Improved single-crystal silicon solar cell electrode

• Main Authors: Chih-Wei Chen, 陳志偉
• Other Authors: Wern-Dare Jehng
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/40607447311459423923

碩士 === 國立勤益科技大學 === 機械工程系 === 98 === This study used a sol-gel solution containing phosphorus as the phosphorus diffusion source, which was applied onto single-crystal silicon wafers through spin coating method. In this basic conditions, optoelectronic property analysis is different electrode structures and materials for solar cells. The study aims to explore the effect of different structures of silver and ITO film were used as electrodes on single crystal silicon solar cells. Structures can be divided into ITO、silver 、silver covered in ITO、ITO covered in silver、thermal treatment ITO、thermal treatment silver、thermal treatment silver covered in ITO and thermal treatment ITO covered in silver. Different transparent conductive material (transparent conductive oxide, TCO), such as ITO (indium tin oxide, referred to as ITO), indium zinc oxide (indium zinc oxide, referred to as IZO) instead of the traditional single-crystal silicon solar cell silver wire electrodes. The UV/Vis instrument was used in this study to measure the transmittance of TCO. The α-step instrument was measurement the thickness of the film thickness, using Four-Point Probe to measure the sheet resistor of TCO films. The different metal such as metal of Ag, Al, Cu, Pt and Ti covered in between the silicon and the TCO film can expect to successfully export the electrons to increase solar cell conversion efficiency. The film of metal covering the silicon wafer will be reduce the light entering, and the transmittance of thin metal films will be important to control. Analysis Solar cell is the use of solar light simulator to measure the light current-voltage curve, thus obtained solar cell open circuit voltage, short circuit current, fill factor and the photoelectric conversion efficiency. Analysis of dark current curve used in this study was reverse saturation current, series resistance, shunt resistance and on/off ratio. To compare these features with solar features, analysis of diode characteristics on the impact of solar cells.