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The hybrid quantum dot (QD) electroluminescent devices are fabricated by mixing every two kinds of QDs in the red, green, blue three types of QDs in a ratio 1:1, which are based on the structure of ITO/PEDOT:PSS/QDs/Al. In the systematical investigation of the electroluminescent spectrum, when the voltage increases, we find that the luminance intensity of the controlling devices continues to grow, while the hybrid QD devices first increase then decrease, showing that there is an energy transfer in the hybrid QD devices. And we also obtain the relationships among the energy transfer efficiency, the critical energy transfer distance, the donor-acceptor distance, and the electric field.
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Keywords:
- quantum-dot /
- electroluminescent /
- energy transfer /
- electric field
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[49] -
[1] Colvin V L, Schlamp M C, Alivisatos A 1994 Nature 370 354
[2] Bulovi V, Bawendi M G 2004 Angew. Chem. Int. Ed. 43 2154
[3] [4] Yu W W, Qu L H, Guo W Z, Peng X G 2003 Chem. Mater. 15 2854
[5] [6] [7] Sargent EH 2005 AdvMater. 17 515
[8] [9] Steckel J S, Coe-Sullivan S, Bulovi V, Bawendi M G 2003 Adv. Mater. 15 1862
[10] [11] Lee J I, Ha K S, Yoo H S 2008 Acta Biomater. 4 791
[12] [13] Clapp A R., Medintz I L, Mauro J M, Fisher B R., Bawend M G, Mattoussi H J 2004 Am. Chem. Soc. 126 301
[14] Yang D Z, Xu SK, ChenQF 2007 Spectrosc. Spectr. Anal. 27 1807 (in Chinese)[杨冬芝, 徐淑坤, 陈启凡 2007 光谱学与光谱分析 27 1807]
[15] [16] Wang Z G 2002 International Progress of Material Science and Engineering (Jinan: Publishing Company of Shandong Science and Technology) p42 (in Chinese)[王占国2002材料科学与工程国际前沿(济南山东科学技术出版)第42页]
[17] [18] Sopanen M, Xin H P, Tu C W 2002 Appl. Phys. Lett. 76 994
[19] [20] [21] Rogalski A 1999 Infrared Phys. Technol. 40279
[22] [23] Shchekin O B, Deppe D G 2002 Appl. Phys. Lett. 80 3277
[24] [25] Moeller G, SulliwanSC 2006 Adv. Display 70 44
[26] [27] Qiao Y, Feng X Y, Zhang J Y, Cui Y P 2006 China Illumination Eng. J. 17 1 (in Chinese)[乔毅, 冯雪元, 张家雨, 崔一平2006照明工程学报17 1]
[28] Wu C C, Wu C I, Sturm J C, Kahn A 1997 Appl. Phys. Lett. 70 1348
[29] [30] Cho K S, Lee E K, Joo W J, Jang E 2009 Nature Photonics 3 341
[31] [32] [33] Zhu H N, Xu Z, Zhao S L, Zhang F J, Kong C, Yan G, Gong W 2010 Acta Phys. Sin. 59 80939 (in Chinese)[朱海娜, 徐征, 赵谡玲, 张福俊, 孔超, 闫光, 龚伟2010物理学报59 80939]
[34] Wang D Y, Sun H Q, Xie X Y, Zhang P J 2012 Acta Phys. Sin. 61 227303 (in Chinese)[王度阳, 孙慧卿, 解晓宇, 张盼君2012物理学报61 227303]
[35] [36] [37] Kong Y C, Zhou D Y, Lan Q, Liu J L, Miao Z H, Feng S L, Niu Z C 2003 Chin. Phys. 12 97
[38] Xu X R, Su M Z 2004 Luminescence and Light Emitting Material (Beijing:Chemical Industry Press) p218 (in Chinese)[徐叙瑢, 苏勉曾2004发光学与发光材料(北京: 化学工业出版社)第218页]
[39] [40] Kagan C R, Murray CB, Nirmal M, Bawendi M G 1996 Phys. Rev. Lett. 761 517
[41] [42] [43] Du P, Zhang X Q, Sun X B, Yao Z G, Wang Y S 2006 Chin. Phys. 15 1370
[44] Aaron R. C, Igor L M, Matthew M 2004 J. Am. Chem. Soc. 126 301
[45] [46] Xie W F 2006 Chin. Phys. 15 203
[47] [48] Ye H, Lu P F, Yu Z Y, Yao W J, Chen Z H, Jia B Y, Liu Y M 2010 Chin. Phys. B 19 047302
[49]
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