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在量子点的研究中，对于量子点光致发光研究报道较多，而量子点电致发光研究报道较少，特别是对于混合量子点电致发光器件中能量转移机理的研究未见报道，由于不同量子点之间的能量转移机理决定着器件的性能，为此本论文对该方面进行了研究. 分别制备了单种量子点器件和混合器件，混合器件是利用红、绿、蓝三种量子点按照1：1的比例两两混合，做成结构为ITO/PEDOT：PSS/QDs/Al的器件. 研究发现在一定电压范围内，单种量子点器件的发光强度随着电压增加持续上升，而混合量子点器件的发光出现了短波长下降，长波长上升的现象，表明当有外加电场时不同尺寸的量子点间产生了较高效率的能量转移. 同时首次对混合量子点电致发光器件能量转移的各项参数进行了计算，得到了能量转移效率E、临界能量转移距离R0与外加电场的关系，对制备混合量子点电致发光器件具有指导意义.
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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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