Cadmium Telluride (CdTe) Thin Film for Photovoltaic Applications
Cadmium Telluride (CdTe) Thin Film for Photovoltaic Applications
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用于光伏应用的碲化镉 (CdTe) 薄膜
DOI：
10.7763/ijcea.2013.v4.290
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
K. Mallick
中科院分区：
文献类型：
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作者：
S. Ray;K. Mallick
在常压下，采用提拉法制备了不同温度下的碲化镉（CdTe）薄膜。光学带隙在1.63-1.60 eV范围内。微晶尺寸由XRD获得，取决于成分（Cd/Te）和烘烤温度。拉曼光谱证实了横向（TO）和纵向（LO）光学声子的存在下，在碲化镉结构。薄膜具有良好的光电导性，可用于光伏应用。索引条款-碲化镉，光学带隙，光电导。I.由于其在诸如集成光学、光电子学、太阳能转换、伽马射线检测和X射线成像的技术应用中的实际重要性，对光子CdTe材料的不同性质的兴趣是相当大的。CdTe具有直接带隙和高吸收系数，是一种低成本的薄膜光伏电池。CdTe可以使用大量的制备方法/技术掺杂有n型和p型材料，例如真空沉积（1）、电沉积（2）、（3）、分子束外延（4）、金属有机化学气相沉积（5）、（6）、近空间升华（7）、（8）和丝网印刷（9）、（10）。有必要详细了解用于制造光伏应用的材料的基本性质。在目前的工作中，我们专注于基本的和基本的性质，如光学，结构和光电导响应的CdTe薄膜生长的浸涂光伏应用。
Cadmium telluride (CdTe) thin films are prepared by the dip-coating deposition technique under atmospheric pressure at different temperature. The optical band gap obtained within the range 1.63-1.60 eV. Crystallite sizes are obtained from XRD that are dependent on composition (Cd/Te) and baking temperatures. Raman spectra confirms the presence of transverse (TO) and longitudinal (LO) optical phonons in the CdTe structure. Films are good photoconductive in nature and could be used in photovoltaic applications. Index Terms—CdTe, optical band-gap, photoconductivity. I. I NTRODUCTION The interest on the different properties of photonic CdTe material is of considerable, due to its practical importance in technological applications such as, integrated optics, optoelectronics, solar energy conversion, gamma ray detection, and x-ray imaging. CdTe is of low cost thin film photovoltaic cells because of its direct band gap and have high absorption coefficient. CdTe could be doped with both n- and p- type materials using a large number of of preparation methods / techniques such as vacuum deposition (1), electro-deposition (2), (3), molecular beam epitaxial (4), metal-organic chemical vapour deposition (5), (6), close-space sublimation (7), (8) and screen printing (9), (10). It is necessary to have a detailed understanding of the basic properties of the materials for the fabricating the photovoltaic applications. In this present work we focuses on the basic and fundamental properties like optical, structural and photoconductive response of CdTe thin films grown by the dip-coating for the photovoltaic applications.