標題: Large Scale Single-Crystal Cu(In,Ga)Se-2 Nanotip Arrays For High Efficiency Solar Cell
作者: Liu, Chin-Hung
Chen, Chia-Hsiang
Chen, Szu-Ying
Yen, Yu-Ting
Kuo, Wei-Chen
Liao, Yu-Kuang
Juang, Jenh-Yih
Kuo, Hao-Chung
Lai, Chih-Huang
Chen, Lih-Juann
Chueh, Yu-Lun
電子物理學系
光電工程學系
Department of Electrophysics
Department of Photonics
關鍵字: Cu(In,Ga)Se-2 nanotip arrays;milling process;postseleneizatoin;solar cell
公開日期: 1-十月-2011
摘要: In this paper, we demonstrated direct formation of large area Cu(In,Ga)Se-2, nanotip arrays (GIGS NTRs) by using one step Ar+ milling process without template. By controlling milling time and incident angles, the length of CIGS NTRs with adjustable tilting orientations can be precisely controlled. Formation criteria of these CIGS NTRs have been discussed in terms of surface curvature, multiple components, and crystal quality, resulting in a highly anisotropic milling effect. The CIGS NTRs have very low reflectance <0.1% at incident wavelengths between 300 to 1200 nm. Open circuit voltage and short circuit current of CIGS NTRs solar cell were measured to be similar to 390 mV and similar to 22.56 mA/cm(2), yielding the filling factor and the efficiency of 59 and 5.2%, respectively. In contrast to CIGS thin film solar cell with efficiency of 3.2%, the nanostructured CIGS NTRs can have efficiency enhancement of similar to 160% due to the higher light absorption ability because of the nanostructure. The merits of current approach include the latest way via template-free direct creating process of nanostructured CIGS NTRs with controllable dimensionality and large scale production without postselenization process.
URI: http://dx.doi.org/10.1021/nl202673k
http://hdl.handle.net/11536/150388
ISSN: 1530-6984
DOI: 10.1021/nl202673k
期刊: NANO LETTERS
Volume: 11
起始頁: 4443
結束頁: 4448
顯示於類別:期刊論文