Preparation and Physical Properties of CdSe Semiconductor Films by Ultrasonic Chemistry Method

Abstract:

CdSe films have been prepared successfully by an ultrasonic chemical bath method, with CdCl2•2.5H2O and Na2SeSO3 as precursors, and trisodium citrate as complexing agent. The films were characterized by XRD, AFM, and UV-Vis. The results showed that the CdSe films were n-type semiconductor and had absorption in the visible region. The CdSe film electrode had higher electron transfer rate, which leads to a substantial improvement on the photocurrent. Optimal condition for preparing the CdSe thin films were as following: the ratio of Cd2+ to trisodium citrate was 1:1.5, the ratio of Cd2+ to Se2- was 2.5:1, the pH value was 10, the deposition time was 2.5h, and the annealing temperature was 350°C.

• Periodical: Advanced Materials Research (Volume 465)
• Pages: 262-267
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.465.262
• Online since: February 2012
• Authors: Zhi Qian Zhang, Guang Ming Wu, De Wen Gao, Yan Ying Zhu, Yang Cao, Yang Zhou
• Keywords: CdSe Film, Chemical Bath Deposition (CBD), Electrical Properties, Optical Property, Ultrasonic

References

[1] Lin Zhang-Bi, Su Xing-Guang, Zhang Hao, et al. Studies on quantum dots synthesized in aqueous solution for biological labeling, J. Chemical Research In Chinese Universities. 24( 2003)216-220.

[2] Yang Suo-long, Yuan Hong-yan, ZhongJin-rong, et al. Preparation of CdSe film with chemical bath deposition , J. Chemical Research and Application. 20(2008) 1209-1211.

[3] Huynh W U, Peng X G, Alivisatos A P. Programmed assemblyof DNA functionalized quantum dots, J. J Am Chem Soc. 121(1999) 8122.

[4] Zhang Han-ping, Lin Yuan, Zhou Xiaowen, et al. Preparation and photoelectrochemical performance of CdSe nanocrystalline film electrode, J. New Chemical Materials. 34(2006) 17-18.

[5] Chen C, Justice R S, Schaefer D W, Baur J W. Highly dispersed nanosilica-epoxy resins with enhanced mechanical properties, J. Polymer. 49(2008) 3805-3815.

DOI: 10.1016/j.polymer.2008.06.023

[6] Wang Hong-zhi, Li Jian, Yang Jin-shuang, et al. Research development on electrochemistry method preparation of CdSe nanomaterial, J]. Plating and Finishing. 30(2008) 20-22.

[7] Lade S J, Uplane M D, Lokhande C D. Mater Chem Phys. 68(2001)36.

[8] Jia Huimin, Chen Xue-wu, Lei Yan, et al. The solvothermal synthesis and photoelectrochemical behavior of nanocrystalline CdSe films, J. New Chemical Materials. 29(2011) 42-44.

[9] Wang Hui-li, Ma Xiao-dong, Qian Xue-feng, et al. Chemical bath deposition of CdSe thin films and its patterning, J. Materials Review. 20(2006)119-122.

[10] Cui Hai-ning, Zhang Jiang-fan, Wang Rong, et al. Preparation of cadmiumsulfide semiconductor films by chemical solution growth and ultrasonical chemistry method, J. Chinese Journal of Material Research. 13(1999)419-422.