Mn 분말을 환원제로 사용하여 열증발법에 의해 생성된 ZnO 마이크로/나노결정

소호진; 이근형; Ho-Jin So; Geun-Hyoung Lee

Korean Journal of Materials Research, Vol.29, No.7, 432-436, July, 2019

DOI10.3740/MRSK.2019.29.7.432 Export Citation

Mn 분말을 환원제로 사용하여 열증발법에 의해 생성된 ZnO 마이크로/나노결정

ZnO Micro/Nanocrystals Synthesized by Thermal Evaporation Method using Mn Powder as the Reducing Agent

소호진¹, 이근형^{1, 2, †}

¹동의대학교 대학원 신소재공학과
²동의대학교 신소재공학부 전기전자소재공학전공

Ho-Jin So¹, and Geun-Hyoung Lee^{1, 2, †}

¹Department of Advanced Materials Engineering, Graduate School, Dong-eui University, 176 Eomgwangno, Busanjin-gu, Busan 47340, Republic of Korea
²Electrical & Electronic Materials Engineering Major, Division of Advanced Materials Engineering, Dong-eui University, 176 Eomgwangno, Busanjin-gu, Busan 47340, Republic of Korea

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Zinc oxide(ZnO) micro/nanocrystals are grown via thermal evaporation of ZnO powder mixed with Mn powder, which is used as a reducing agent. The ZnO/Mn powder mixture produces ZnO micro/nanocrystals with diverse morphologies such as rods, wires, belts, and spherical shapes. Rod-shaped ZnO micro/nanocrystals, which have an average diameter of 360 nm and an average length of about 12 μm, are fabricated at a temperature as low as 800 °C due to the reducibility of Mn. Wireand belt-like ZnO micro/nanocrystals with length of 3 μm are formed at 900 °C and 1,000 °C. When the growth temperature is 1,100 °C, spherical shaped ZnO crystals having a diameter of 150 nm are synthesized. X-ray diffraction patterns reveal that ZnO had hexagonal wurtzite crystal structure. A strong ultraviolet emission peak and a weak visible emission band are observed in the cathodoluminescence spectra of the rod- and wire-shaped ZnO crystals, while visible emission is detected for the spherical shaped ZnO crystals.

Keywords:zinc oxide crystals;manganese powder;thermal evaporation;reducing agent

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[2] Cheng A, Tzeng Y, Zhou Y, Park M, Wu T, Shannon C, Wang D, Lee W, Appl. Phys. Lett., 92, 092113 (2008)

[3] Yang JL, An SJ, Park WI, Yi GC, Choi W, Adv. Mater., 16(18), 1661 (2004)

[4] Na JS, Gong B, Scarel G, Parsons GN, ACS Nano, 3, 3191 (2009)

[5] Lee J, Easteal AJ, Pal U, Bhattacharyya D, Curr. Appl. Phys., 9(4), 792 (2009)

[6] Illy BN, Ingham B, Ryan MP, Cryst. Growth Des., 10, 1189 (2010)

[7] Calestani D, Zha MZ, Zanotti L, Villani M, Zappettini A, Cryst. Eng. Comm., 13, 1707 (2011)

[8] Johari A, Rana V, Bhatnagar MC, Nanomater. Nanotechnol., 1, 49 (2011)

[9] Xu CX, Sun XW, Dong ZL, Yu MB, Appl. Phys. Lett., 85, 3878 (2004)

[10] Yao BD, Chan YF, Wang N, Appl. Phys. Lett., 81, 757 (2002)

[11] Biswas M, McGlynn E, Henry MO, McCann M, Rafferty A, J. Appl. Phys., 105, 094306 (2009)

[12] Lv H, Sang DD, Li HD, Du XB, Li DM, Zou GT, Nanoscale Res. Lett., 5, 620 (2010)

[13] Zhang Y, Ram MK, Stefanakos EK, Goswami DY, J. Nanomater., 2012, 624520 (2012)

[14] Kim DS, Gosele U, Zacharias M, J. Cryst. Growth, 311(11), 3216 (2009)

[15] Ozgur U, Alivov YI, Liu C, Teke A, Reshchikov MA, Dogan S, Avrutin V, Cho SJ, Morloc H, J. Appl. Phys., 98, 041301 (2005)

[16] Wang DF, Zhang TJ, Solid State Commun., 149, 1947 (2009)

[17] Djurisic AB, Choy WCH, Roy VAL, Leung YH, Kwong CY, Cheah KW, Rao TKG, Chan WK, Lui HT, Surya C, Adv. Funct. Mater., 14(9), 856 (2004)

[18] Wu XL, Siu GG, Fu CL, Ong HC, Appl. Phys. Lett., 78, 2285 (2001)