Fabrication of Cu2ZnSnS4 films by sulfurization of Cu/ZnSn/Cu precursor layers in sulfur atmosphere for solar cells |
| |
Authors: | RBV ChalapathyGwang Sun Jung Byung Tae Ahn |
| |
Affiliation: | Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro,Yuseong-gu, Daejeon 305-701, South Korea |
| |
Abstract: | 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. |
| |
Keywords: | CZTS Cu2ZnSnS4 Kesterite Sulfurization Solar cells |
本文献已被 ScienceDirect 等数据库收录! |