捷克先令
拉曼光谱
材料科学
制作
微观结构
太阳能电池
化学工程
图层(电子)
能量转换效率
薄膜
相(物质)
大气(单位)
硫黄
纳米技术
化学
冶金
光电子学
光学
医学
物理
替代医学
工程类
病理
有机化学
热力学
作者
R.B.V. Chalapathy,Gwang Sun Jung,Byung Tae Ahn
标识
DOI:10.1016/j.solmat.2011.07.017
摘要
Cu2ZnSnS4 (CZTS) absorbers were grown by sulfurization of Cu/ZnSn/Cu precursors in sulfur atmosphere. The reaction mechanism of CZTS formation from the precursor was analyzed using XRD and Raman spectroscopy. The films with a single phase CZTS were formed at 560 and 580 °C by sulfurization for 30 min. The film grown at 560 °C showed bi-layer morphology with grooved large grains on the top and dense small grains near the bottom of the film. On the other hand, the film grown at 580 °C showed large grains with grooves that are extended from surface top to bottom of the film. The solar cell fabricated with the CZTS film grown at 560 °C showed the best conversion efficiency of 4.59% for 0.44 cm2 with Voc=0.545 V, Jsc=15.44 mA/cm2, and FF=54.6. We found that further improvement of the microstructure of CZTS films can increase the efficiency of CZTS solar cells.
科研通智能强力驱动
Strongly Powered by AbleSci AI