Photoelectrochemical behaviour of Zn3In2S6 single crystals in aqueous solutions |
| |
| Affiliation: | 1. School of Resources, Environment and Materials, State Key Laboratory of Featured Metal Materials and Life-cycle Safety for Composite Structures, Guangxi University, Nanning 530004, China;2. Scientific Research Academy of Guangxi Environmental Protection, Nanning 530004, China;1. College of Chemistry and Materials Science, Huaibei Normal University, Anhui, Huaibei 235000, People’s Republic of China;2. College of Chemistry and Material Engineering, Anhui Science and Technology University, Anhui, Fengyang 233100, People’s Republic of China;1. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore;2. Singapore Membrane Technology Center, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 639798, Singapore;1. School of Resources, Environment and Materials, Guangxi University, Nanning 530004, China;2. College of Light Industry and Food Engineering, Guangxi University, Nanning 530004, China;3. School of Environmental Science and Engineering, Sun Yat-Sen University, 510275, China;4. School of Mechanical and Resource Engineering, Wuzhou University, Wuzhou Engineering Research Center of Resource Recycling, Wuzhou 543002, China |
| |
| Abstract: | The basic photoelectrochemical behaviour and some physical quantities of the ternary semiconductor n-Zn3In2S6 have been investigated for the first time. From the photocurrent actions spectrum in 1M Na2SO4 a direct optical band gap energy (Eg) equal to 2.81 eV has been determined. From capacity measurements a flat band potential (VFB 0 − 1.29 V SCE) has been calculated, as well as the donor density, the conduction and the valence band edge. With pH increasing, a shift of the photocurrent onset potential (Von) to more cathodic values has been observed. The presence of redox systems such as Na2S/NaOH, Na2SO3, K3Fe(CN)6]/ K4Fe(CN)6], Ce3+/Ce4+ improves the stability of the electrodes and produces reasonable photovoltages. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
