Please use this identifier to cite or link to this item:
|Title:||Voltage tunable wavelength LEDs|
|Source:||Soh, C.B., Chua, S.J., Hartono, H. (2008). Voltage tunable wavelength LEDs. Physica Status Solidi (C) Current Topics in Solid State Physics 5 (6) : 2183-2185. ScholarBank@NUS Repository. https://doi.org/10.1002/pssc.200778526|
|Abstract:||We report on the growth and fabrication of a LED which emits light, tunable in color, as the injection current is increased from I = 1.0 mA to 40 mA. Two multiple quantum well (MQWs) structures, designated as A and B, are grown in the LEDs, with quantum dots embedded in MQWs B while MQWs A are conventional blue emitting quantum well layers. A broad photoluminescence spectrum ranging from 430 nm to 750 nm is measured, which is the result of spectral broadening attributed to the incorporation of quantum dots in the well layer of MQWs B coupled with the grading of Indium composition in the well of MQW B. This leads to a gradual change in the emission wavelength as the electronhole (e-h) pairs recombine at the different stacked layers to give a transition from red, yellow, green and cyan as injection current increases. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.|
|Source Title:||Physica Status Solidi (C) Current Topics in Solid State Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 28, 2018
WEB OF SCIENCETM
checked on Mar 5, 2018
checked on Feb 25, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.