High-density Cu_2ZnSnS_4(CZTS) materials are prepared via the mechanical alloying and high pressure sintering method using Cu_2S,ZnS and SnS_2 as the raw materiais.The morphological,structural,compositional and eiectricai properties of the materials are investigated by using x-ray diffraction,scanning electron microscopy,and energy dispersive x-ray spectroscopy,as well as by the Raman scattering and the Hall Effect measurements.The CZTS synthesized under 5 GPa and 800℃ shows a p-type conductivity,with a resistivity of 9.69 × 10^(-2)Ω·cm and a carrier concentration of 1.45 × 10^(20) cm^(-3).It is contributed to by the large grains in the materials reducing the grain boundaries,thus effectively reducing the recombination of the charge carriers.
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机译：How the Group Leaders of Lesson Preparation Groups Facilitate Group Learning and Reflective Practice in Chinese Public High Schools =中国公立高中的备课组长是如何引领团队学习和反思性实践的？
机译：Erratum for “Preparation of Low-Temperature Phase Change Materials Microcapsules and Its Application to Asphalt Pavement” by Feng Li, Siqi Zhou, Sai Chen, Zhenglong Yang, Jian Yang, Xingyi Zhu, Yuchuan Du, Peiting Zhou, and Zhihao Cheng
