Solar cell and field emission application of aligned silicon nanowires prepared by electroless etching

• Main Authors: Chang-Han Chen, 陳長翰
• Other Authors: Jih-Shang Hwang
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/76006894602895413826

碩士 === 國立臺灣海洋大學 === 光電科學研究所 === 95 === Aligned silicon nanowires prepared by electroless etching with good anti-reflection were applied to solar cells and field emission displays in the present thesis. For solar cell fabrications, a Filmtronic P-600 phosphor diffusion source along with a shadow mask for deposition of gold fingers was used. After electroless etching using the gold fingers as the etching mask, the efficiency of the solar cell was shown to be raise from 4% (plane silicon) to 4.7%. Further, by changing the backside contact from gold to aluminum, the efficiency can reach 6% due to a P+ layer introduced by the aluminum layer to help collecting the carriers. For filed emission display application, the filed emission property of the silicon nanowires was characterized. We concluded that the longer the nanowires, the higher the turn-on filed, which can be attributed to the so-called screen effect. To resolve the problem, we patterned the silicon nanowires in arrays of circles. The turn-on filed was demonstrated to be lowered from 18V/μm to 4.4V/μm (with a circle diameter of 90μm), which shed light on the application of filed emission display using the silicon nanowires.