Quantum-dot light-emitting diodes utilizing CdSe/ZnS nanocrystals embedded in TiO2 thin film

Seung-Hee Kang; Ch. Kiran Kumar; Zonghoon Lee; Kyung-Hyun Kim; Chul Huh; Eui-Tae Kim
November 2008
Applied Physics Letters;11/10/2008, Vol. 93 Issue 19, p191116
Academic Journal
Quantum-dot (QD) light-emitting diodes (LEDs) are demonstrated on Si wafers by embedding core-shell CdSe/ZnS nanocrystals in TiO2 thin films via plasma-enhanced metallorganic chemical vapor deposition. The n-TiO2/QDs/p-Si LED devices show typical p-n diode current-voltage and efficient electroluminescence characteristics, which are critically affected by the removal of QD surface ligands. The TiO2/QDs/Si system we presented can offer promising Si-based optoelectronic and electronic device applications utilizing numerous nanocrystals synthesized by colloidal solution chemistry.


Related Articles

  • Modeling organic light-emitting diodes incorporating nanocrystal quantum dots. Kohary, K.; Burlakov, V. M.; Pettifor, D. G. // Journal of Applied Physics;12/1/2006, Vol. 100 Issue 11, p114315 

    Based on a rate equation model, we have investigated theoretically the performance of a model organic light-emitting diode (OLED), which is activated by a single emissive layer of nanocrystals (NCs) embedded between electron- and hole-transporting organic films. Our model combines a unified...

  • worldnews.  // Solid State Technology;Apr2012, Vol. 55 Issue 3, p6 

    The article offers world news briefs related to solid state technology in 2012 including the projected revenue of 316 billion dollars for semiconductors, the expected decline of semiconductor fab equipment spending and the light emitting diode (LED) subsidy program of China.

  • The lowdown on LEDs. Baxter, John // Commercial Carrier Journal;Oct2007, Vol. 164 Issue 10, p34 

    The article discusses the applications of light-emitting diode (LED) technology in the commercial trucking business. Brad Van Riper of Truck-Lite explained the usage of LED has meant that lighting dropped off the top 10 list of maintenance areas in frequency and cost. The key advantages to LED...

  • Sunlight stability of organic light-emitting diodes. Heil, H.; Andress, G.; Schmechel, R.; von Seggern, H.; Steiger, J.; Bonrad, K.; Sprengard, R. // Journal of Applied Physics;6/15/2005, Vol. 97 Issue 12, p124501 

    This paper reports on the photodegradation of organic light-emitting diodes (OLEDs) due to exposure to visible and near-ultraviolet light. Such exposure affects strongly the device performance, e.g., the electroluminescence intensity and the device current decrease considerably, however, the...

  • White organic light-emitting devices with a phosphorescent multiple emissive layer. Gang Cheng; Yingfang Zhang; Yi Zhao; Yuanyuan Lin; Chunyan Ruan; Shiyong Liu; Teng Fei; Yuguang Ma; Yanxiang Cheng // Applied Physics Letters;7/24/2006, Vol. 89 Issue 4, p043504 

    A phosphorescent multiple emissive layer, in which a blue emissive layer is sandwiched between red and green ones, is employed in a white organic light-emitting device (OLED). This OLED has a maximum luminance of 48 000 cd/m2 at 17 V, a maximum power efficiency of 9.9 lm/W at 4 V, and a color...

  • Making light work of illumination. Excell, Jon // Engineer (00137758);10/10/2003, Vol. 292 Issue 7637, p45 

    No abstract available.

  • A Light-Emitting Future. Cristol, Hope // Futurist;Sep2002, Vol. 36 Issue 5, p6 

    Forecasts the use of light-emitting diodes (LED). Replacement of incandescent and fluorescent lights by LED; Discussion of the technology called solid-state lighting; Advantages and disadvantages of LED.

  • LED drivers with currents up to 1.5A.  // Electronics Weekly;2/27/2008, Issue 2324, p19 

    The article evaluates three LED drivers from Zetex Semiconductors, including the ZXLD1320 buck mode driver, the ZXLD1321 boost mode drivers, and the ZXLD1322 buck/boost mode driver.

  • Investigations of Conducting Polymer Polyaniline in Four Balkan Countries. Muharemovic, Zijad; Gazdic, Izet // TTEM- Technics Technologies Education Management;Mar2009, Vol. 4 Issue 1, p75 

    Electrically conducting polymers are interesting and very prospective class of new organic materials that combine solubility, processability and flexibility of plastics with electrical and optical properties of metals and semiconductors. These polymers have attracted remarkable attention in the...


Read the Article


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

Try another library?
Sign out of this library

Other Topics