Luminescent CdTe

Deng, D. W. Qin, Y. B. Yang, X. Yu, J. S. and Pan, Y. (2006). The selective synthesis of water-soluble highly luminescent CdTe nanoparticles and nanorods The influence of precursor Cd/Te molar ratio.. Cryst. Growth, 296,141-149. 

Mandal, A., Nakayama, J., Tamai, N., Biju, V. and Isikawa, M. (2007) Optical and dynamic properties of water-soluble highly luminescent CdTe quantum dots. J. Phys. Chem. B, 111, 12765-12771 Mandal, A. and Tamai, N. (2008) Influence of acid on luminescence properties of thioglycolic acid-capped CdTe quantum dots. J. Phys. Chem. C, 112, 8244-8250. 

Tekin E, Smith PJ, Hoeppener S, van den Berg AMJ, Susha AS, Feldman J, Rogach AL, Schubert US. (2007) Inkjet printing of luminescent CdTe nanocrystal/polymer composites. Adv Fund Mater 17 23-28. 

Y, Volkov, S, Mitchell, N, Gaponik, Y, P, Rakovich, J, F, Donegan, D, KeUeher, and A, L, Rogach, In-situ observation of nanowire growth from luminescent cdte nanocrystal in a phosphate buffer solution, Chem. Phys. Chem., 5 1600-1602, 2004... 

Y. Wang, Luminescent CdTe and CdSe semiconductor nanocrystals Preparation, optical properties and applications, J. Nanosci. Nanotech., 8, 1068-1091 (2008). 

Figure 4.6 Photographs of lateral structures selectively formed by green- and red-luminescing CdTe nanocrystals via an electric field-directed LbL assembly, and the corresponding emission spectra. Reproduced with permission from Ref [99].

W-C. Law, K.-T. Yong, 1. Roy, H. Ding, R. Hu, W.W Zhao, P.N. Paras, Aqueous-phase synthesis of highly luminescent CdTe/ZnTe core/shell quantum dots optimized for targeted bioimaging. Small 5 (2009) 1302-1310. 

D. V. Talapin, S. Haubold, A. L. Rogach, A. Kornowski, M. Haase, H. Weller, A Novel Organometalhc Synthesis of Highly Luminescent CdTe Nanocrystals. The Journal of Physical Chemistry B 2001,105,2260-2263. 

J. M. Tsay et al., Hybrid approach to the synthesis of highly luminescent CdTe/ZnS and CdHgTe/ZnS nanocrystals. Journal of the American Chemical Society, 126(7), 1926-1927 (2004). 

Tang, Z. Kotov, N. A. and Giersig, M. (2002). Spontaneous Organization of Single CdTe Nanopartides into Luminescent Nanowires. Science, 297, 237-240. 

Figure 9.4 Two-photon absorption-induced luminescence of CdTe QDs in D2O and H2O obtained from the luminescence spectrum as a function of time. The diameter and solvent are (a) 4.5 nm in D2O, (b) 3.7 nm in D2O, (c) 4.5 nm in H2O,...

From a theoretical point of vie v, the blinking kinetics of these CdTe QDs can be quantified by analysis of the on- and off- time probability densities, P(ton) and respectively. Figure 9.8 displays the luminescence intermittency statistics for CdTe QDs in trehalose environment. The distribution of off times involved in the blinking is almost linear on this scale, indicating that the lengths of off times events are distributed according to an inverse po ver-la v of the type, P tos) = Pof where Pq is... 

Pan, L., Ishikawa, A. and Tamai, N. (2007) Detection of optical trapping of CdTe quantum dots by two-photon-induced luminescence. Phys. Rev. B, 75, 161305R-1-161305R-4. 

Fig. 2 Comparison of the luminescence decays of QDs and organic dyes. InP and CdTe QDs decay multiexponentially with a mean lifetime (ii/e) of 17 and 6 ns, respectively. The organic dye Cy5 shows monoexponential decay with tf of 1.5 ns...

Tsuruoka, T., Takahashi, R., Nakamura, T., Fuji, M., Akamatsu, K., Nawafune, H., Highly luminescent mono- and multilayers of immobilized CdTe nanocrystals controlling optical properties through post chemical surface modification. Chem. Commun. 2008, 1641-1643. 

Surface modification can also promote different photoluminescence responses to chemical species present in the environment. Li et al.48 synthesized water-soluble luminescent thiol-capped CdTe QDs and nanorods and investigated the effect of divalent metal ions on their photoluminescence behavior. They found that the trends of photoluminescence changes were almost similar for both, CdTe QDs and nanorods. Moreover, zinc ions enhanced the luminescence emission of the QDs while other metal ions (e.g., calcium, magnesium, manganese, nickel, and cadmium) caused luminescence quenching. 

Wang, Q., Kuo, Y., Wang, Y., Shin, G., Ruengraglikit, C., and Fluang, Q. (2006). Luminescent properties of water-soluble denatured BSA-coated CdTe quantum dots. J. Phys. Chem. B,... 

Lee, J., Govorov, A. O., Dulka, J., and Kotov, N. A. (2004). Bioconjugates of CdTe Nanowires and Au Nanoparticles Plasmon-Exciton Interactions, Luminescence Enhancement, and Collective Effects. Nano Lett. 4 2323-2330. 

---