Characterization and optical properties of Cadmium Telluride nanopowders synthesized via hydrothermal method

Document Type : Full length research Paper


1 ferdowsi university of mashhad

2 Ferdowsi university of mashhad

3 Esfarayen high education complex


Cadmium telluride nanopowders were synthesized through the hydrothermal method at different temperatures and reaction times. The prepared samples were characterized using x-ray diffraction (XRD), scanning electron microscopy (SEM), Energy-dispersive X-ray spectroscopy (EDS) and diffuse reflectance UV-vis spectroscopy (DR UV-vis). The XRD patterns revealed that the secondary phases almost disappeared in the sample synthesized at 180 ° C for 80h. SEM images showed that the average particle size of the prepared CdTe powders is about 85 nm. Investigation of optical properties confirmed that CdTe nanopowders synthesized by hydrothermal are ideal materials to be used as the absorber layer in fabricating optical devices such as solar cells.


[1]                 V.M. Sklyarchuk, Yu.O. Plevachuk, P.I. Feichuk, L.P. Shcherbak, Transport Properties and Viscosity of Liquid CdTe Doped with In, Ge, and Sn, Inorganic materials 38 (2002) 1109-1114.
[2]                 Y. Yin, R. Wang, L. Zhou, CdTe quantum dots and YAG hybrid phosphors for white light-emitting diodes, Luminescence 29 (2014) 626-629.
[3]                 H. Shen, Y. Zheng, H. Wang, W. Xu, L. Qian, Y. Yang, A. Titov, J. Hyvonen, L.S. Li, Highly efficient near-infrared light-emitting diodes by using type-II CdTe/CdSe core/shell quantum dots as a phosphor, Nanotechnology 24 (2013) 475603-475609.
[4]                 X.F. Gao, H.B. Li, W.T. Sun, Q. Chen, F.Q. Tang, L.M. Peng, CdTe Quantum Dots-Sensitized TiO2 Nanotube Array Photoelectrodes,  Journal of Physical Chemistry  C 113 (2009) 7531-7535.
[5]                 N. Romeo, A. Bosio, A. Romeo, An innovative process suitable to produce high-efficiency CdTe/CdS thin-film modules, Solar Energy Materials & Solar Cells 94 (2010) 2-7.
[6]                 H. Gong, X. Hao, Y. Wu, B. Cao, H. Xu, X. Xu, Influence of EDTA2− on the hydrothermal synthesis of CdTe nanocrystallites, Journal of Solid State Chemistry 184 (2011) 3269-3272.
[7]                 A. Morales-Acevedo, Can we improve the record efficiency of CdS/CdTe solar cells?, Solar Energy Materials & Solar Cells 90 (2006) 2213-2220.
[8]                 X.N. Wang, J. Wang, M.J. Zhou, H. Wang, X.D. Xiao, Q. Li, CdTe nanorods formation via nanoparticle self-assembly by thermal chemistry method, Journal of Crystal Growth 312 (2010) 2310-2314.
[9]                 G.L. Tan, N. Wu, J.G. Zheng, U. Hommerich, D. Temple, Optical Absorption and Valence Band Photoemission from Uncapped CdTe Nanocrystals,  Journal of Physical Chemistry . B 110 (2006) 2125-2130.
[10]              F. Shieh, A.E. Saunders, B.A. Korgel, General Shape Control of Colloidal CdS, CdSe, CdTe Quantum Rods and Quantum Rod Heterostructures,  Journal of Physical Chemistry . B 109 (2005) 8538-8542.
[11]              V. Saaminathan, K.R. Murali, Preparation and properties of CdTe nano films, Semiconductor Electronics 20 (2002) 92-95.
[12]              H. Shen, H. Wang, X. Chen, J.Z. Niu, W. Xu, X. M. Li, X. D. Jian, Z. Du, L. S. Li, Size- and Shape-Controlled Synthesis of CdTe and PbTe Nanocrystals Using Tellurium Dioxide as the Tellurium Precursor, Chemistry of Materials 22 (2010) 4756-4761.
[13]              Y. Li, L. Jing, R. Qiao, M. Gao, Aqueous synthesis of CdTe nanocrystals: progresses and perspectives, Chemical Communications 47 (2011) 9293-9311.
[14]              L. Yang, Y. Wang, Y. Wang, X. Wang, L. Wang, G. Han, Shape-controlled synthesis of MnWO4 nanocrystals via a simple hydrothermal method, Journal of Alloys and Compounds 578 (2013) 215-219.
[15]              H. Gomez, R. Henriquez, R. Schrebler, G. Riveros, D. Leinen, J. R. Ramos-Barrado,E. A. Dalchiele, A soft-solution electrochemical processing technique for preparing CdTe/n-Si(1 0 0) heterostructures, Journal of Electroanalytical Chemistry 574 (2004) 113-122.
[16]              S.M. Hosseini, B. Ghanbari Shohany, N. Azad, A. Kompany, Electrical properties comparison of NTC thermistors prepared from nanopowders and in mixed oxide process, Materials Science-Poland 29 (2011) 253-259.
[17]              W.W. Yu, L. Qu, W. Guo, X. Peng, Experimental Determination of the Extinction Coefficient of CdTe, CdSe, and CdS Nanocrystals, Chemistry of Materials 15(2003) 2854-2860.
[18]              A. Bensouici, J.L. Plaza, O. Halimi, B. Boundine, M. Sebais, E. Dieguez, structural and optical properties of CdTe nanocrystals embedded in KH2PO4 (KDP) dielectric crystal, Journal of Optoelectronics and Advanced Materials 10  (2008) 3051-3053.
[19]              A.L. Rogach, L. Katsikas, A. Kornowski, D. Su, A. Eychmuller, H. Weller, Synthesis and characterization of thiol-stabilized CdTe nanocrystals Journal of Physical Chemistry 100 (1996) 1772-1778.
[20]              R. Yang, Y. Yan, Y. Mu, W. Ji, X. Li, M. Zou, Q. Fei, Q. Jin, A Rapid and Facile Method for Hydrothermal Synthesis of CdTe Nanocrystals Under Mild Conditions, Journal of Nanoscience and Nanotechnology 6 (2006) 215–220.
[21]              H. Cha-Hwan, P. Jong-Pil, S. Mi-Yeon, L. Jin-Ho, S. Il-Wun, Syntheses of CdTe Quantum Dots and Nanoparticles through Simple Sonochemical Method under Multibubble Sonoluminescence Conditions, Bulletin of the Korean Chemical Society 32 (2011) 2207-2211.
[22]              Y. Kuo, Q. Wang, C. Ruengruglikit, H. Yu, Q. Huang, Antibody-Conjugated CdTe Quantum Dots for Escherichia coliDetection, Journal of Physical Chemistry C 112 (2008)4818-4824.
[23]              J.C. Manifacier, J. Gasiot, J.P. Fillard, A simple method for the determination of the optical constants n, k and the thickness of a weakly absorbing thin film, Journal of Physics E: Scientific Instruments 9 (1976) 1002-1010.
[24]              M. Ghasemifard, S.M. Hosseini, A. KhorsandZak, Gh.H. Khorrami, Microstructural and optical characterization of PZT nanopowder prepared at low temperature, Physica E 41 (2009) 418-422.
[25]              Y. Chen, C. Lee, S. Chen, F. Flory, Extra high reflection coating with negative extinction coefficient, OPTICS LETTERS 38 (2013) 3377-3379.
[26]              A. KhorsandZak, A.M. Hashim, M. Darroudi, Optical properties of ZnO/BaCO3 nanocomposites in UV and visible regions, Nanoscale Research Letters 9 (2014) 399-405.
[27]              Z. RazaKhan, M. Zulfequar, M. ShahidKhan, Structural, optical, photoluminescence, dielectric and electrical studies of vacuum-evaporated CdTe thin films  Bulletin of Materials Science  35 (2012) 169-174.