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Colloidal copper sulfide nanocrystals: Electrochemical, electrical and morphological properties

  • Alejandro Baray-Calderón (a1), R. Galindo (a2) (a3), J. L Maldonado. (a2), Omar Martínez-Alvarez (a4), L.S. Acosta-Torres (a5), José Santos-Cruz (a6), J. de la Fuente-Hernández (a5) and M.C. Arenas-Arrocena (a5)...


The highlight of this work is the synthesis of copper sulfide nanocrystals by a simple one-pot colloidal process, and the study of its electrochemical, electrical and morphological properties. Nanocrystals of Cu1.8S of about 15-30 nm were obtained at a temperature of 240°C under an argon atmosphere. The colloidal solution of the nanocrystals was analyzed by cyclic voltammetry. Agreeing to the values of EOx and ERed vs. SCE, and the average of three samples the HOMO and LUMO levels are 6.16 and 4.27 eV, respectively, the calculated HOMO – LUMO (Eg) is 1.89 eV. The Eg value, differs of that value obtained from Kubelka-Munk equation (1.7 eV). The photocurrent vs. time results showed that the Cu1.8S/Cu junction is photosensitive and could be used as absorbing material. The morphology and the topography of the film were analyzed by SEM and AFM techniques. Irregular agglomeration of nanocrystals was observed and a roughness of about 194 nm.


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1. Quintana, Priscilla V., Arenas-Arrocena, M.C., Santos-Cruz, J., Vega-González, M., Martínez-Álvarez, O., Castaño-Meneses, V.M., Acosta-Torres, L.S., de la Fuente-Hernández, J., Growth evolution and phase transition from chalcocite to digenite nanocrystalline copper sulphide: Morphological, optical and electrical properties, Beilstein Journal of Nanotechnology 5 (2014) 15421552.
2. Lu, Yunzhang, Hou, Yanbing, Wang, Yan, Feng, Zhihui, Liu, Xiaojun, , Yanwu, Effect of monodisperse Cu2S nanodisks on photovoltaic performance of P3HT/PCBM polymer solar cells, Synthetic Metals 161 (2011) 906910.
3. Gollu, Sankara Rao, Sharma, Ramakant, Srinivas, G., Kundu, Souvik, Gupta, Dipti, Effects of incorporation of copper sulfide nanocrystals on the performance of P3HT: PCBM based inverted solar cells, Organic Electronics 15 (2014) 25182525.
4. Quintana-Ramírez, Priscilla V. and Arenas, M. C. “Effect of Copper Sulfide nanocrystals in a poly(3-hexylthiophene)/Titania solar cell”, Mater. Res. Soc. Symp. Proc. 1537 © 2013 Materials Research Society DOI: 10.1557/opl.2013.791.
5. Li, Zhong-guo, Qian, Xue-min, Xiao, Zhengçguo, Wei, Tai-Huei, Song, Ying-lin, Nonlinear absorption and scattering properties of copper sulfide nanocrystals, Chemical Physics Letters 612 (2014) 219222.
6. Murphy, A.B., Band-gap determination from diffuse reflectance measurements of semiconductor films, and application to photoelectrochemical water-splitting, Solar Energy Materials & Solar Cells 91 (2007) 13261337.



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