Department of Biological and Environmental Science, College of Life Science and Biotechnology, Dongguk University, 32 Dongguk-ro, Biomedical Campus, Ilsandong-gu, Siksa-dong, Goyang-si 10326, Korea.
School of Chemistry and Physics, Queensland University of Technology (QUT), 2 George Street, Brisbane, QLD 4001, Australia.
Int J Mol Sci. 2021 Oct 27;22(21):11610. doi: 10.3390/ijms222111610.
We are reporting on the impact of air annealing temperatures on the physicochemical properties of electrochemically synthesized cadmium selenium telluride (CdSeTe) samples for their application in a photoelectrochemical (PEC) solar cell. The CdSeTe samples were characterized with several sophisticated techniques to understand their characteristic properties. The XRD results presented the pure phase formation of the ternary CdSeTe nanocompound with a hexagonal crystal structure, indicating that the annealing temperature influences the XRD peak intensity. The XPS study confirmed the existence of Cd, Se, and Te elements, indicating the formation of ternary CdSeTe compounds. The FE-SEM results showed that the morphological engineering of the CdSeTe samples can be achieved simply by changing the annealing temperatures from 300 to 400 °C with intervals of 50 °C. The efficiencies (ƞ) of the CdSeTe photoelectrodes were found to be 2.0% for the non-annealed and 3.1, 3.6, and 2.5% for the annealed at 300, 350, and 400 °C, respectively. Most interestingly, the PEC cell analysis indicated that the annealing temperatures played an important role in boosting the performance of the photoelectrochemical properties of the solar cells.
我们报告了空气退火温度对电化学合成的碲化镉硒（CdSeTe）样品物理化学性质的影响，这些样品将应用于光电化学（PEC）太阳能电池中。通过多种复杂技术对 CdSeTe 样品进行了表征，以了解其特性。XRD 结果表明，三元 CdSeTe 纳米复合物具有六方晶体结构，形成了纯相，表明退火温度影响 XRD 峰强度。XPS 研究证实了 Cd、Se 和 Te 元素的存在，表明形成了三元 CdSeTe 化合物。FE-SEM 结果表明，通过将退火温度从 300 到 400°C 以 50°C 的间隔简单地改变，就可以实现 CdSeTe 样品的形态工程。发现 CdSeTe 光电管的效率（ƞ）分别为未经退火的 2.0%，以及在 300、350 和 400°C 退火的 3.1%、3.6%和 2.5%。最有趣的是，PEC 电池分析表明，退火温度在提高太阳能电池光电化学性能方面起着重要作用。
