半导体量子点由于具有独特的发光特性而具有极高的应用价值.结合本实验室的工作介绍了半导体量子点的发光原理和发光特性,在实验中发现核壳结构的CdSe/CdS半导体量子点比没有包覆的CdSe半导体量子点的发光稳定性提高,吸收光谱和发射光谱均发生红移,而且粒径不同,半导体量子点所呈现的颜色也不同,随着粒径的增加吸收光谱和发射光谱向长波方向红移.介绍了半导体量子点在光电子器件和生物医学方面的应用,并对其发展前景进行了展望.
参考文献
| [1] | Bruchez J M, Moronne M, Alivisatos A P, et al. Semiconductor nanocrystals as fluorescent biological labels[J]. Science, 1998,281(5385):2013-2016. |
| [2] | Warren C W, Nie S M. Quantum dot bioconjugates for ultrasensitive nonisotopic detection[J]. Science,1998, 281(5385):2016-2018. |
| [3] | Colvin V L, Schlamp M C, Alivisatos A P. Light emitting diodes cadmium selenide nanocrystals and a semiconduting polymer[J]. Nature, 1994,370(6488):354-357. |
| [4] | Peng X, Manna L, Alivisatos A P, et al. Shape control of CdSe nanocrystals [J].Nature, 2000,404(6773):59-61. |
| [5] | Whaley S R, Hu E L, Belcher A M. Selection of peptideswith semiconductor binding specificity for directed nanocrystal assembly[J].Nature, 2000, 405(6787): 665-668. |
| [6] | Seth Coe, Wing K W, Vladimir Bulovic, et al. Electroluminescence from single monolayers of nanocrystals in molecular organic devices[J].Nature, 2002, 420(6917):800-803. |
| [7] | 孙宝全, 徐咏蓝,陈德朴,等. 半导体纳米晶体的光致发光特性及在生物材料荧光标记中的应用[J]. 分析化学,2002,30(9):1130-1136. |
| [8] | 关柏鸥,汤国庆,韩关云,等. 半导体纳米材料的光学性能及研究进展[J].光电子*激光,1998,9(3): 260-263. |
| [9] | Robert E B, Andrew M S, Nie S M. Quantum dots in biology and medicine[J].Phys. E, 2004, 25(1): 1-12. |
| [10] | Andrew J S. Quantum dots as luminescent probes in biological systems[J]. Curr. Opin. Solid .St .M., 2002,6(4):365-370. |
| [11] | Peng X G, Schlamp M C, Alivisatos A P, et al.Epitaxial growth of highly luminescent CdSe/CdS core/shell nanocrystals with photostability and electronic accessibility[J]. J. Am. Chem. Soc., 1997,119(30): 7019-7029. |
| [12] | Kumar N D, Joshi M P, Friend C S, et al. Organic-inorganic heterojunction light emitting diodes based on poly(p-phenylenevinylene)/cadmium sulfide thin films[J]. Appl. Phys. Lett., 1997,71(10): 1388-1390. |
| [13] | Liu S H, Qian X F, Yin J, et al. Preparation and characterization of polymer-capped CdS nanocrystals [J].J. Phys. Chem. So-lids., 2003,64(3):455-458. |
| [14] | Xu L, Wang L, Chen K J, et al. Surface passivation and enhanced quantum-size e_ect and photo stability of coated CdSe/CdS nanocrystals[J].Phys.E, 2000,8(2):129-133. |
| [15] | Schlamp M C, Peng X G, Alivisatos A P, et al. Improved efficiencies in light emitting diodes made with CdSe(CdS) core/shell type nanocrystals and a semiconducting polymer[J].J. Appl. Phys., 1997,82(11):5837-5842. |
| [16] | 孟磊,宋增璇. 量子点在生物医学中的应用[J].生物化学与生物物理进展, 2004,31(2):185-187. |
| [17] | Warrant C W, Dustin J M, Nie S M, et al. Luminescent quantum dots for multiplexed biological detection and imaging[J].Curr. Opin. Biote. ,2002,13(1):40-46. |
| [18] | Han M Y, Gao X H, Nie S M, et al.Quantulm-dot-tagged microbeads for multiplexed optical coding of biomolecules[J]. Nat.Bio. 2001,19(7):631-635. |
| [19] | Xu H X, Sha M Y, Mahoney W, et al. Multiplexed SNP genotyping using the QbeadTM bead system: a quantum dot-encoded microsphere-based assay[J].Nucl. Acids. Res.,2003,31(8):e43. |
| [20] | Dubertret B, Skouride P, Libchaber A, et al. In vivo imaging of quantum dots encapsulated in phospholipids micelles[J]. Science. 2002, 298(5599): 1759-1762. |
| [21] | Rosenthal S J, Tomlinson I, Blakely R D, et al. Targeting cell surface receptors with ligand-conjugated nanocrystals[J].J. Am. Chem. Soc., 2002,124(17):4586-4594. |
| [22] | Parak W J, Boudreau R, Alivisatos A P,et al. Cell motility and metastatic potential studies based on quantum dot imaging of phagokinetic tracks[J].Adv.Mater., 2002,14(12):882-885. |
| [23] | 林章碧,苏星光,金钦汉,等. 纳米粒子在生物分析中的应用[J].分析化学,2002,30(2):237-241. |
| [24] | 谢海燕,庞代文.Ⅱ一Ⅵ型量子点制备及其在生物检测中应用研究进展[J].分析化学,2004,32(8):1099-1103. |
| [25] | 谭翠燕,梁汝强,阮康成.量子点的生命科学中的应用[J].生物化学与生物物理学报, 2002,34(1):1-5. |
| [26] | 林鸿溢.纳米科学技术的新进展[J].液晶与显示,2002,17(1):21-27. |
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