Hydrothermal Preparation of Cubic ITO Powder and Its Photoelectric Performance†

doi:10.7503/cjcu20170046

Abstract

Abstract:

Cubic indium tin oxide(c-ITO) nanopowders were prepared by hydrothermal method under 120—140 ℃ to get the precursor and calcination at 550 ℃, using metal In and SnCl₄·5H₂O as the raw materials. The hydrothermal temperature and the reaction time influenced the morphology and the crystal structure of the ITO powders. The photoelectric performance of the c-ITO prepared under 140 ℃ for 12 h was analyzed. The ITO powders were also characterized by means of thermogravimetric-differential scanning calorimetry(TG-DSC) analysis, X-ray diffraction(XRD), Raman spectroscopy, transmission electron microscopy(SEM), four point probe resistance measurement, X-ray photoelectron spectroscopy(XPS) and UV-Vis spectrophotometry(UV-Vis). The results show that with the increase of hydrothermal temperature, ITO powders’ morphology changed from cubic to irregular shape, and a small amount of hexagonal phase crystal appeared. The average size of the c-ITO prepared after hydrothermal treatment at 140 ℃ for 12 h with n(In³⁺)∶n[CO(NH₂)₂]=1∶5 was 230 nm, and the c-ITO showed a better electrical performance with a low resistivity of 1.247 Ω·cm. Compared with c-In₂O₃, c-ITO has a higher optical band gap of 3.685 eV. The PL spectrum of c-ITO excitated with 260 nm wavelength was in blue light region.

Key words: Cubic indium tin oxide, Hydrothermal method, Photoelectric property

CLC Number:

O611

TrendMD:

ZHANG Yiqing, LIU Jiaxiang. Hydrothermal Preparation of Cubic ITO Powder and Its Photoelectric Performance^†[J]. Chem. J. Chinese Universities, 2017, 38(7): 1110.

Figures/Tables 10

Fig.1 TG-DSC curves of ITO precursor obtained under 140 ℃ hydrothermal reaction

Fig.2 XRD patterns of products prepared under different temperaturesa. 120 ℃, ITO; b. 140 ℃, ITO; c. 160 ℃, ITO; d. 140 ℃, In(OH)3.

Fig.3 Raman spectrum of ITO powder obtained after 140 ℃ hydrothermal treatmentΓopt=4Ag+4Eg+14Tg+5Au+5Eu+16Tu(6)

Fig.4 TEM images of ITO powders prepared after different hydrothermal treatment (A) 120 ℃, 6 h; (B) and (C) 140 ℃, 6 h; (D) and (E) 140 ℃, 12 h; (F) 160 ℃, 6 h.

Fig.5 XPS spectra of ITO powder obtained after hydrothermal treatment at 140 ℃ for 12 h (A) Wide scan; (B) narrow scan of O1s; (C) narrow scan of In3d; (D) narrow scan of Sn3d.

Fig.6 Resistivity of ITO powders prepared after hydrothermal treatment at 120 ℃ for 6 hn(In3+)∶n[CO(NH2)2]: a. 1∶3; b. 1∶4; c. 1∶5; d. 1∶6.

Fig.7 Resistivity of ITO powders prepared after different hydrothermal treatmenta. 120 ℃, 6 h; b. 140 ℃, 6 h; c. 140 ℃, 12 h; d. 160 ℃, 6 h.

Fig.8 Diffusion reflection spectrum of ITO powder obtained after hydrothermal treatment at 140 ℃ for 12 h

Fig.9 UV-Vis absorption spectrum of ITO powder obtained after hydrothermal treatment at 140 ℃ for 12 hInset: the corresponding plot of (αhv)2 as a function of photon energy(hv).

Fig.10 Photoluminescence spectrum of ITO nanopowders

References 22

[1]	Zhang Z. Q., Dev. Appl. Mater., 2010, 25(1), 66—73
	(张智强. 材料开发与应用, 2010,25(1), 66—73)
[2]	Pain P., Arun P., J. Semicond., 2016, 37(7), 1—7
[3]	Dai S. Y., Qi H. F., Liu D. B., Teng L. J., Luo F., Tian Y., Chen D. S., J. Aeronaut. Mater., 2016, 36(6), 74—78
	(戴松喦, 祁洪飞, 刘大博, 滕乐金, 罗飞, 田野, 陈冬生.航空材料学报, 2016, 36(6), 74—78)
[4]	Li Z. Q., He J. H., Wang Y. J., Feng D. D., Gu E. D., Li W. C., Acta Phtonica Sin., 2016, 45(12), 2—7
	(李志全, 何家欢,王亚娟,冯丹丹,顾而丹,李文超.光子学报, 2016, 45(12), 2—7)
[5]	Qiu Y., Chen Y. F., Zu C. K., Jin Y. L., Adv. Ceram., 2016, 37(5), 303—324
	(邱阳, 陈玉峰,祖成奎, 金扬利.现代技术陶瓷, 2016, 37(5), 303—324)
[6]	Baghi R., Zhang K., Wang S. R., Hope-Weeks L. J., Microporous Mesoporous Mater., 2017, 244, 258—263
[7]	Scarpellini A. K., Petrik P., Papp S., Dekany I., Appl. Surf. Sci., 2014, 320, 725—731
[8]	Zhu X. B., Jiang T., Qiu G. Z., Huang B. Y., Trans. Nonferrous Met. Soc. China,2009, 19, 752—756
[9]	Lu H. C., Mao J. W., Chiang Y. C., Surf. Coa. Technol., 2013, 231, 526—530
[10]	Sasaki T., Endo Y., Nakaya M., Kanie K., Nagatomi A., Tanoue K., Nakamura R., Muramatsu A., J. Mater. Chem., 2010, 20, 8153—8157
[11]	Yan J. F., Xu M. Z., Zhang F. J., Ruan X. F., Yun J. N., Zhang Z. Y., Liao F. Y., Mater. Lett., 2016, 165, 243—246
[12]	Yu D. B., Wang D. B., Qian Y. T., Yu W. C., J. Solid State Chem., 2004, 177, 1230—1234
[13]	Klaumunzer M., Mackovic M., Ferstl P., Voigt M., Spiecker E., Meyer B., Peukert W.J. , Phys. Chem.C,2012, 116, 24529—24537
[14]	Wang C. Y., Dai Y., Pezoldt J., Lu B., Kups T., Cimalla V., Ambacher O., Cryst. Growth Des., 2008, 8(4), 1257—1260
[15]	Hafeezullah Yamani Z. H., Iqbal J., Qurashi A., Hakeem A., J. Alloys Compd., 2014, 616, 76—80
[16]	Jeon M. K., Kang M., Mater. Lett., 2008, 62, 676—682
[17]	Jeevanandam P., Mulukutla R. S., Phillips M. S., Chaudhuri S., Erickson L. E., Klabunde K. J., J. Phys. Chem.C,2007, 111(5), 1912—1918
[18]	Senthilkumar V., Vickraman P., Jayaghandran M., Sanjeeviraja C., Vacuum,2010, 84, 864—869
[19]	Wang T., Radovanovic P. V., J. Phys. Chem.C,2011, 115(38), 18473—18478
[20]	Qu F., Zhang T., Gu H. W., Qiu Q. Q., Ding F. Z., Peng X. Y., Wang H. Y., Rare Met., 2015, 34(3), 173—177
[21]	Zeng F. H., Zhang X., Wang J., Wang L. S., Zhang L. N., Nanotechnol., 2004, 15(5), 596—600
[22]	Wu X. C., Hong J. M., Han Z. J., Tao Y. R., Phys. Lett., 2003, 373, 28—32