초음파 방법을 이용한 CdTe 양자점의 합성 및 특성에 관한 연구

유정열; 김우석; 박선아; 김종규; Jeong-yeol Yoo; Woo-seok Kim; Seon-A Park; Jong-Gyu Kim

Applied Chemistry for Engineering, Vol.28, No.5, 571-575, October, 2017

DOI10.14478/ace.2017.1078 Export Citation

초음파 방법을 이용한 CdTe 양자점의 합성 및 특성에 관한 연구

Study on Sonochemical Synthesis and Characterization of CdTe Quatum Dot

유정열, 김우석, 박선아, 김종규^†

단국대학교 자연과학대학 화학과

Jeong-yeol Yoo, Woo-seok Kim, Seon-A Park, and Jong-Gyu Kim^†

Department of Chemistry, Dankook University, Cheon-an Chung-nam 31116, Korea

E-mail:

초록

본 연구에서는 초음파 조사법을 사용하여 cadmium telluride (CdTe) 양자점을 합성하였다. 전구체의 비율과 합성 시간을 주 변수로 하여 그에 따른 CdTe 양자점의 광학적 특성과 구조적 특성을 분석하였다. 모든 cadmium (Cd)과 tellurium (Te) 함량비율의 실험에서 합성 시간이 증가함에 따라 CdTe 양자점의 성장에 의해 밴드갭 감소현상이 관찰되었고, 발광 특성을 확인한 결과 510~610 nm 파장 범위에서 장파장으로 이동함을 보였다. 또한 Te의 비율이 증가함에 따라 장파장이동이 빠르게 일어나는 것을 확인하였다. Photoluminescence (PL) 피크 강도를 확인하였을 때 합성시간이 180min~240 min 사이에서 가장 높은 강도를 보였다. X-ray diffraction (XRD)와 transmission electron microscopy (TEM)으로 구조적 특성을 확인한 결과 zinc blend 구조의 CdTe 양자점을 나타내었으며, 합성시간이 210 min일 때 양자점의 크기는 약 2.5 nm로 균일하게 분산되어 있었으며 fast fourier transform (FFT) 이미지를 확인한 결과 뚜렷한 결정성을 확인 하였다.

In this study, cadmium telluride (CdTe) quantum dots were synthesized by using ultrasonic irradiation method. Optical properties and structural characteristics of the CdTe quantum dots were analyzed by two main variables; the ratio of the precursor and the synthesis time. As the synthesis time increased, the band gap reduction was observed with the growth of CdTe quantum dots. As for the luminescence properties, the red shift appeared at 510~610 nm wavelength range. Also, it was confirmed that the red shift occurs rapidly as the ratio of Te increases. According to PL peak intensity, the highest intensity was shown at 180 to 240 min. Structural characteristics of CdTe quantum dots were investigated through XRD and TEM, and the cubic zinc blend structure was observed. The size of quantum dots was about 2.5 nm and uniformly dispersed when the synthesis time took 210 min. In addition, the apparent crystallinity was discovered in FFT image.

Keywords:cadmium telluride;quantum dot;ultrasonic;sonochemical;red shift

[References]

Brus LE, J. Chem. Phys., 80, 4403 (1984)
Thomas DP, Walsh BM, Gupta MC, Nanotechnology, 22, 185503 (2011)
Li YQ, Rizzo A, Cingolani R, Gigli G, Adv. Mater., 18(19), 2545 (2006)
Poznyak SK, Talapin DV, Shevchenko EV, Weller H, Nano Lett., 4, 693 (2004)
Narhi LO, Schmit J, Bechtold-Peter K, Sharma D, J. Pharm. Sci., 2, 493 (2012)
Coe S, Woo WK, Bawendi M, Bulovic V, Nature, 420, 800 (2002)
Dubertert B, Skourides P, Norris DJ, Noireaux V, Brivanlou AH, Libchaber A, Science, 298, 1759 (2002)
Huynh WU, Peng XG, Alivisatos AP, Adv. Mater., 11(11), 923 (1999)
murray CB, Norris DJ, Bawendi MG, J. Am. Chem. Soc., 115, 8906 (1993)
Christensen NE, Groczyca I, Christensen OB, Schmid U, Cardona M, J. Cryst. Growth, 101, 318 (1990)
Moghaddam MM, Baghbanzadeh M, Sadeghpour A, Glatter O, Kappe CO, J. Eur. Chem., 19, 11629 (2013)
Kumar BJ, Kumar DS, Mahesh HM, J. Lumines., 178, 362 (2016)
Liu YF, Yu JS, J. Colloid Interface Sci., 333(2), 690 (2009)
Silva FO, Carvalho MS, Mendonca R, Macedo WA, Balzuweit K, Reiss P, Nanoscale Res. Lett., 7, 536 (2012)
Kamat PV, Science, 271, 933 (1996)
Alivisatos AP, Science, 271(5251), 933 (1996)
Peng X, Manna L, Yang W, Wickham J, Scher E, Kadavanich A, Alivistos AP, Nature, 404, 59 (2002)
Pickett NL, Lawson S, Thomas WG, Riddell FG, Foster DF, Cole-Hamilton DJ, Fryer JR, J. Mater. Chem., 8, 2769 (1998)
Rajh T, Mieie OI, Nozik AJ, J. Phys. Chem., 79, 11999 (1993)
Hambrock J, Birkner A, Fischer RA, J. Mater. Chem., 11, 3197 (2001)
Chen HS, Lo B, Hwang JY, Chang GY, Chen CM, Tasi SJ, Wang SJJ, J. Phys. Chem. B, 108(44), 17119 (2004)
Ge C, Xu M, Liu J, Lei J, Ju H, Chem. Commun., 4, 450 (2008)
Ribeiro RTR, Dias JJMM, Pereira GG, Freitas DV, Cabral Filho PE, Raele RA, Fontes A, Navarro M, Santos BS, Green Chem., 15, 1061 (2013)
Zhou D, Lin M, Chen Z, Sun H, Zhang H, Sun H, Yang B, Chem. Mater., 23, 4857 (2011)
Menezes FD, Galembeck A, Alves S, Ultrason. Sonochem., 18, 1008 (2011)
Klayman DL, Griffin TS, J. Am. Chem. Soc., 95, 197 (1973)
Gedanken A, Ultrason. Sonochem., 11, 47 (2004)
Saez V, Mason TJ, Molecules, 14, 4284 (2009)
Qiu XF, Burda C, Fu RL, Pu L, Chen HY, Zhu JJ, J. Am. Chem. Soc., 126(50), 16276 (2004)
Mahendiran C, Ganesan R, Gedanken A, Eur. J. Inorg. Chem., 14, 2050 (2009)
Shi JJ, Yang GH, Zhu JJ, J. Mater. Chem., 21, 7343 (2011)
Dabala M, Pollet BG, Zin V, Campadello E, Mason TJ, J. Appl. Electrochem., 38(3), 395 (2008)
Stroyuk AL, Kryukov AI, Kuchmii SY, Pokhodenko VD, Theor. Exp. Chem., 41, 67 (2005)
Eom NSA, Kim TS, Choa YH, Kim SB, J. Mater. Res., 22, 140 (2012)

[Referenced By]

[1] Brus LE, J. Chem. Phys., 80, 4403 (1984)

[2] Thomas DP, Walsh BM, Gupta MC, Nanotechnology, 22, 185503 (2011)

[3] Li YQ, Rizzo A, Cingolani R, Gigli G, Adv. Mater., 18(19), 2545 (2006)

[4] Poznyak SK, Talapin DV, Shevchenko EV, Weller H, Nano Lett., 4, 693 (2004)

[5] Narhi LO, Schmit J, Bechtold-Peter K, Sharma D, J. Pharm. Sci., 2, 493 (2012)

[6] Coe S, Woo WK, Bawendi M, Bulovic V, Nature, 420, 800 (2002)

[7] Dubertert B, Skourides P, Norris DJ, Noireaux V, Brivanlou AH, Libchaber A, Science, 298, 1759 (2002)

[8] Huynh WU, Peng XG, Alivisatos AP, Adv. Mater., 11(11), 923 (1999)

[9] murray CB, Norris DJ, Bawendi MG, J. Am. Chem. Soc., 115, 8906 (1993)

[10] Christensen NE, Groczyca I, Christensen OB, Schmid U, Cardona M, J. Cryst. Growth, 101, 318 (1990)

[11] Moghaddam MM, Baghbanzadeh M, Sadeghpour A, Glatter O, Kappe CO, J. Eur. Chem., 19, 11629 (2013)

[12] Kumar BJ, Kumar DS, Mahesh HM, J. Lumines., 178, 362 (2016)

[13] Liu YF, Yu JS, J. Colloid Interface Sci., 333(2), 690 (2009)

[14] Silva FO, Carvalho MS, Mendonca R, Macedo WA, Balzuweit K, Reiss P, Nanoscale Res. Lett., 7, 536 (2012)

[15] Kamat PV, Science, 271, 933 (1996)

[16] Alivisatos AP, Science, 271(5251), 933 (1996)

[17] Peng X, Manna L, Yang W, Wickham J, Scher E, Kadavanich A, Alivistos AP, Nature, 404, 59 (2002)

[18] Pickett NL, Lawson S, Thomas WG, Riddell FG, Foster DF, Cole-Hamilton DJ, Fryer JR, J. Mater. Chem., 8, 2769 (1998)

[19] Rajh T, Mieie OI, Nozik AJ, J. Phys. Chem., 79, 11999 (1993)

[20] Hambrock J, Birkner A, Fischer RA, J. Mater. Chem., 11, 3197 (2001)

[21] Chen HS, Lo B, Hwang JY, Chang GY, Chen CM, Tasi SJ, Wang SJJ, J. Phys. Chem. B, 108(44), 17119 (2004)

[22] Ge C, Xu M, Liu J, Lei J, Ju H, Chem. Commun., 4, 450 (2008)

[23] Ribeiro RTR, Dias JJMM, Pereira GG, Freitas DV, Cabral Filho PE, Raele RA, Fontes A, Navarro M, Santos BS, Green Chem., 15, 1061 (2013)

[24] Zhou D, Lin M, Chen Z, Sun H, Zhang H, Sun H, Yang B, Chem. Mater., 23, 4857 (2011)

[25] Menezes FD, Galembeck A, Alves S, Ultrason. Sonochem., 18, 1008 (2011)

[26] Klayman DL, Griffin TS, J. Am. Chem. Soc., 95, 197 (1973)

[27] Gedanken A, Ultrason. Sonochem., 11, 47 (2004)

[28] Saez V, Mason TJ, Molecules, 14, 4284 (2009)

[29] Qiu XF, Burda C, Fu RL, Pu L, Chen HY, Zhu JJ, J. Am. Chem. Soc., 126(50), 16276 (2004)

[30] Mahendiran C, Ganesan R, Gedanken A, Eur. J. Inorg. Chem., 14, 2050 (2009)

[31] Shi JJ, Yang GH, Zhu JJ, J. Mater. Chem., 21, 7343 (2011)

[32] Dabala M, Pollet BG, Zin V, Campadello E, Mason TJ, J. Appl. Electrochem., 38(3), 395 (2008)

[33] Stroyuk AL, Kryukov AI, Kuchmii SY, Pokhodenko VD, Theor. Exp. Chem., 41, 67 (2005)

[34] Eom NSA, Kim TS, Choa YH, Kim SB, J. Mater. Res., 22, 140 (2012)