Room temperature spectral hole burning and elimination of photodarkening in sol-gel derived CdS

Kang, K.; Kepner, A.D.
March 1994
Applied Physics Letters;3/21/1994, Vol. 64 Issue 12, p1487
Academic Journal
Investigates the room temperature spectral hole burning as a technique to characterize the cadmium sulphide quantum dots samples. Mechanism of photodarkening in quantum dots; Effect of photodarkening on optical nonlinearities; Reduction of the high silica content photodarkening; Measurement luminescent efficiency.


Related Articles

  • Quantum-dot-sensitized solar cells: Assembly of CdS-quantum-dots coupling techniques of self-assembled monolayer and chemical bath deposition. Lin, Sheng-Chih; Lee, Yuh-Lang; Chang, Chi-Hsiu; Shen, Yu-Jen; Yang, Yu-Min // Applied Physics Letters;4/2/2007, Vol. 90 Issue 14, p143517 

    Two methods, coupling self-assembled monolayer and chemical bath deposition (CBD), were utilized to assemble cadmium sulfide (CdS) quantum dots (QDs) onto mesoporous TiO2 films for dye-sensitized solar cell (DSSC) applications. Colloidal CdS QDs were first self-assembled on the TiO2 surface. CBD...

  • Design of semiconductor CdSe core ZnS/CdS multishell quantum dots for multiphoton applications. Fu, Y.; Han, T.-T.; Ågren, H.; Lin, L.; Chen, P.; Liu, Y.; Tang, G.-Q.; Wu, J.; Yue, Y.; Dai, N. // Applied Physics Letters;4/23/2007, Vol. 90 Issue 17, p173102 

    Optical properties of colloidal II-VI semiconductor CdSe cores with ZnS and CdS multishell quantum dots (QDs) have been studied by experimental characterization and theoretical analysis. Due to the large number of energy states densely compacted in both conduction and valence bands of the...

  • Chemical bath deposition of CdS quantum dots onto mesoscopic TiO2 films for application in quantum-dot-sensitized solar cells. Chang, Chi-Hsiu; Lee, Yuh-Lang // Applied Physics Letters;7/30/2007, Vol. 91 Issue 5, p053503 

    Alcohol, instead of water, was used as a solvent in a chemical bath deposition process for the in situ synthesis of CdS quantum dots onto mesoporous TiO2 films. Due to low surface tension, the alcohol solutions have high wettability and superior penetration ability on the mesoscopic TiO2 film,...

  • CdS quantum dots in hybrid sol–gel matrix; absorption and room-temperature photoluminescence. Kang, K.; Daneshvar, K. // Journal of Applied Physics;1/15/2004, Vol. 95 Issue 2, p646 

    Strong room-temperature luminescence spectra for cadmium sulfide (CdS) nanometer quantum dots (NQDs) were obtained using a xenon lamp. The samples were fabricated of various concentrations of semiconductor NQDs in the hybrid sol–gel matrix. Concentration dependent total absorption showed...

  • Purcell effect for CdSe/ZnSe quantum dots placed into hybrid micropillars. Robin, I. C.; André, R.; Balocchi, A.; Carayon, S.; Moehl, S.; Gérard, J. M.; Ferlazzo, L. // Applied Physics Letters;12/5/2005, Vol. 87 Issue 23, p233114 

    This letter reports the observation of the Purcell effect for CdSe/ZnSe quantum dots located in a hybrid micropillar. The sample consist of a λ/2-ZnSe cavity sandwiched between two SiO2/TiO2 Bragg reflectors. Time-resolved photoluminescence (PL) measurements on a series of single-quantum dots...

  • Investigation of multilayered quantum dot-sensitized solar cells with different Zn chalcogenide passivation layers. Jun, H.; Careem, M.; Arof, A. // Journal of Applied Electrochemistry;Sep2014, Vol. 44 Issue 9, p977 

    In the case of cadmium sulfide (CdS) and cadmium selenide (CdSe)-based quantum dot-sensitized solar cells (QDSSCs), the addition of a zinc sulfide (ZnS) passivation layer improves the solar cell performance. In this study, multilayered QDSSCs were fabricated using CdS and CdSe quantum dots...

  • Spatial hole burning and multimode generation threshold in quantum-dot lasers. Asryan, L.V.; Suris, R.A. // Applied Physics Letters;3/1/1999, Vol. 74 Issue 9, p1215 

    Examines spatial hole burning and multimode generation threshold in quantum-dot (QD) lasers as a function of the parameters of structure and temperature. Increase of the threshold current density with a decrease in the QD size dispersion; Existence of a maximum tolerable QD size dispersion and...

  • Gain dynamics and ultrafast spectral hole burning in In(Ga)As self-organized quantum dots. Kim, K.; Urayama, J.; Norris, T. B.; Singh, J.; Phillips, J.; Bhattacharya, P. // Applied Physics Letters;7/22/2002, Vol. 81 Issue 4, p670 

    Using a femtosecond three-pulse pump-probe technique, we investigated spectral hole-burning and gain recovery dynamics in self-organized In(Ga)As quantum dots. The spectral hole dynamics are qualitatively different from those observed in quantum wells, and allow us to distinguish unambiguously...

  • Lateral-cavity spectral hole burning in quantum-dot lasers. Ouyang, D.; Heitz, R.; Ledentsov, N. N.; Bogna´r, S.; Sellin, R. L.; Ribbat, Ch.; Bimberg, D. // Applied Physics Letters;8/26/2002, Vol. 81 Issue 9, p1546 

    Spectral hole burning effects are observed as strong spectral intensity modulations in the emission spectra of broad and narrow stripe quantum-dot lasers with ridge waveguide. The modulation is attributed to lateral-cavity resonances burning holes in the inhomogeneously broadened spectral gain...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics