By Hadis Morkoc
Actual sciences and engineering, in addition to organic sciences have lately made nice strides of their respective fields. extra importantly, the cross-fertilization of rules, paradigms and methodologies have ended in the extraordinary technological advancements in parts corresponding to info processing, complete color semiconductor monitors, compact biosensors and regulated drug discovery to call a couple of. most sensible specialists of their respective fields have come jointly to debate the newest advancements and the way forward for micro-nano electronics. They examine concerns to be confronted in final limits similar to unmarried electron transitors; 0 dimensional platforms for specific houses; thresholdless lasers, electronics according to reasonably cheap and versatile plastic chips; telephone manipulation; biosensors; DNA dependent pcs; quantum computing; DNA sequencing chips; micro fluidics; nanomotors in response to molecules; molecular electronics and lately rising vast bandgap semiconductors for emitters, detectors and gear amplifiers. Contributions from most sensible specialists during this box Covers a variety of subject matters
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Additional info for Advanced Semiconductor and Organic Nano-Techniques
16. Luminous efficiency of blue InGaN single quantum well LEDs. green InGaN single quantum well LEDs, green GaP LEDs, AlInGaP LEDs. and red GaAlAs LEDs. chromaticity diagram is not accessed because green LEDs do not quite produce the saturated colors due to their relatively wide spectra. Soft white light can be obtained by a combination of blue and yellow. This can be accomplished by a combination of a blue LED, providing the blue color, and a solid state medium such as a Gd-doped YAG (yttrium aluminum garnet) providing the yellow component as has been done by Nichia Chemical, Ltd.
CIE diagram superimposed with visible LEDs having three primary colors and soft white Hght obtained by pumping a YAG medium with a blue InGaN LED. containing red and green (or simply yellow) dyes is pumped with an InGaNbased blue LED as shown in Fig. 18. Combination of blue from the InGaN LED and yellow from the organic medium leads to soft white light. To create a multicolored output with as high efficiency as possible, a two-dye color conversion process may be better. In each case, a host is used to capture the emitted light.
The color of light is dependent on the types of dyes that are 34 H. MoRKog Phosphor emission GaN emission Phosphor FIG. 18. Schematic of packaging of an organic dye containing red and green (or simply yellow) dyes being pumped with a blue InGaN-based blue LED. in the recombination medium. To distinguish this from other types of LEDs, the name OLED for organic LED has been coined. For a review of recent developments, the reader is referred to a special issue of IEEE Transactions on Electron Devices (Dodabalapur and Kido 1997).
Advanced Semiconductor and Organic Nano-Techniques by Hadis Morkoc