Synthesis of Red Light-emitting Hydrotalcite-like Compound and Its Application in LED†

doi:10.7503/cjcu20140714

Abstract

Abstract:

Red light-emitting fluorescent hydrotalcite-like compound was synthesized by coprecipitation method, and then surface-modified using silane coupling agent. The composition and structure of the resulted compound was characterized by fluorescence spectroscopy, Fourier transform infrared(FTIR) spectroscopy, X-ray diffraction(XRD), scanning electron microscopy(SEM), etc. The influence of surface modification was discussed. Additionally, A light-emitting diode(LED) was fabricated by coating hydrotalcite-like compound onto InGaN-based LED chip that emits 384 nm light. The device emits bright red light. The results indicate that red light-emitting fluorescent hydrotalcite-like compound can act as red components in the fabrication of white LED.

Key words: Light-emitting diode(LED), Hydrotalcite-like compound, Rare earth complex, Silane coupling agent

CLC Number:

0614.33

TrendMD:

CHEN Hong, ZHAO Xuan, GAO Hui, ZHU Haidi, JIANG Lihong, LING Qidan. Synthesis of Red Light-emitting Hydrotalcite-like Compound and Its Application in LED^†[J]. Chem. J. Chinese Universities, 2015, 36(1): 41.

Figures/Tables 10

Scheme 1 Mechanism of silane coupling agent(KH-550) reacts with Eu(TTA)3Phen-HTlc

Fig.1 Excitation(a) and emission(b) spectra of Eu(TTA)3Phen(A), Eu(TTA)3Phen-HTlc(B) and KH-550-Eu(TTA)3Phen-HTlc(C)

Fig.2 CIE chromaticity coordinates of KH-550-Eu(TTA)3Phen-HTlc

Fig.3 FTIR spectra of KH-550(a), Eu(TTA)3Phen- HTlc(b) and KH-550-Eu(TTA)3Phen-HTlc(c)

Fig.4 XPS survey spectra of Eu(TTA)3Phen-HTlc(a), KH-550-Eu(TTA)3Phen-HTlc(b)(A) and Si2p XPS spectrum of KH-550-Eu(TTA)3Phen-HTlc(B) (B) a. Background; b. Si—O—Si peak; c. Si—O—M peak; d. peak sum; e. raw spectrum.

Fig.5 XRD patterns of MgAl-LDHs(a), Eu(TTA)3Phen-HTlc(b) and KH-550-Eu(TTA)3Phen(c)

Fig.6 SEM image of Eu(TTA)3Phen-HTlc(A) and KH-550-Eu(TTA)3Phen-HTlc(B)

Fig.7 TG-DSC curves of Eu(TTA)3phen(A), Eu(TTA)3Phen-HTlc(B) and KH-550-Eu(TTA)3Phen-HTlc(C)

Fig.8 Picture of the R-LED

Fig.9 Emission of LEDs under 350 mA forward bias

References 23

[1]	Rao R. P., Devine D. J., SID Symposium Digest of Technical Papers , 2012, 43(1), 933—935
[2]	Du Y. Y., Huang K. K., Zhang J. Q., Wang C. C., Chu X. F., Hou C. M., Feng S. H., Chem. J. Chinese Universities, 2013, 34(3), 509—513
	(杜燕燕, 黄科科, 张佳旗, 王楚楚, 初学峰, 侯长民, 冯守华. 高等学校化学学报, 2013, 34(3), 509—513)
[3]	Guan L., Wang Y., Chen W. H., Jin L., Li X., Guo Q. L., Yang Z. P., Fu G. S., J. Rare Earths, 2010, 28(9), 295—297
[4]	Guo R. H., Wang Y. L., Yang R. D., Lan Y., Chem. Res. Chinese Universities, 2014, 30(2), 190—193
[5]	Emerson H. F., Eduardo J. N., Katia J. C., Miguel A. V., Raquel T., Vicente R., Paulo S. C., Appl. Mater. Interfaces, 2011, 3, 1311—1318
[6]	Gunawan P., Xu R., J. Phys. Chem. C, 2009, 113, 17206—17214
[7]	Fan W., Zhang J., Zhang G., Bai H., Shi W., Yan Y., Funct. Mater. Lett., 2013, 6, 1350060
[8]	Li Y. J., Yan B., Photochem. Photobiol., 2010, 86, 1008—1015
[9]	Gou G. L., Ren R., Li S. W., Guo S. J., Dong Z. P., Xie M., Ma J. T., New J. Chem., 2013, 37, 3861—3864
[10]	Chen H., Zhang W. G., J. Am. Ceram. Soc., 2010, 93(8), 2305—2310
[11]	Chen H., Zhang W. G., Sci. China Chem., 2010, 53(6), 1273—1280
[12]	Yang W. H., Liu B., Ma Z. F., Xi B. F., Chem. Industry Eng., 2004, 21(5), 331—333(杨文虎, 刘斌, 马占峰, 席保锋. 化学工业与工程, 2004, 21(5), 331—333)
[13]	Lü X. D., Shu W. G., Chin. J. Appl. Chem., 2005, 22(6), 638—642(吕兴栋, 舒万艮. 应用化学, 2005, 22(6), 638—642)
[14]	Li M. L., Wu Y. N., Wang Y., Sui Y. L., Silicone Mater., 2012, 26(4), 251—254(李茂龙, 吴粤宁, 王轶, 隋玉龙. 有机硅材料, 2012, 26(4), 251—254)
[15]	Yun S., Song Q. Q., Zhao D. M., Qian G. M., Li X. N., Li W., Appl. Surf. Sci., 2012, 258, 4444—4448
[16]	Wang C. Y., Yang Z. J., Li Y., Gong L. W., Zhao G. W., Phys. Stat.Sol.(a), 2002, 191(1), 117—124
[17]	Fatiha B. D. S., Su B. L., Macromol. Symp., 2008, 273, 125—134
[18]	Xiao L. R., Gao F., Tang J. Y., Zhang W. G., Spectrosc. Spect. Anal., 2004, 24(6),756—761(肖荔人, 高锋, 唐洁渊, 章文贡. 光谱学与光谱分析, 2004, 24(6), 756—761)
[19]	Chen S. P., Meng X. X., Shuai Q., Jiao B. J., Gao S. L., Shi Q. Z., J. Therm. Analy. Calorim., 2006, 86(3), 767—774
[20]	Su D., Huang C. Y., Hua Y., Jiang Q. W., Zhang L., Zhu Y. F., Appl. Surf. Sci., 2011, 258, 928—934
[21]	Tao Q., Yuan J., Frost R. L., He H. P., Yuan P., Zhu J. X., Appl. Clay Sci., 2009, 45, 262—269
[22]	Huang S. J., Wei C., Liu H. X., Lü J., Su L., Zeng S. H., Poly. Mater. Sci. Eng., 2013, 29(7), 44—47(黄绍军, 韦春, 刘红霞, 吕建, 苏乐, 曾思华. 高分子材料科学与工程, , 2013, 29(7), 44—47)
[23]	Cavani F., TrifiròF., Vaccari A., Catalysis Today, 1991, 11(2), 173—301