Zinc oxide moves further into the ultraviolet

[...]efficiency foils off dramatically with increasing A1 content, and there has been limited success in demonstrating solar-blind UV photodetectors (SBPDs; i.e., in the 240290 nm range) with low background signals and high quantum efficiencies. [...]the p-type doping issues of unalloyed ZnO (associ...

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Bibliographic Details
Published in:Laser focus world 2013-10, Vol.49 (10), p.33-36
Main Authors: Rogers, David J, Bove, Philippe, Sandana, Eric V, Teherani, Ferechteh Hosseini, McClintock, Ryan, Razeghi, Manijeh
Format: Magazinearticle
Language:English
Subjects:
Alloying
Crystal structure
Defects
Efficiency
Plasma etching
Temperature
Zinc oxides
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Summary:[...]efficiency foils off dramatically with increasing A1 content, and there has been limited success in demonstrating solar-blind UV photodetectors (SBPDs; i.e., in the 240290 nm range) with low background signals and high quantum efficiencies. [...]the p-type doping issues of unalloyed ZnO (associated with native donor defect compensation and insufficient acceptor concentrations) are significantly reduced in (Mg)ZnO because of the higher activation energy of the donor state and the increase in zinc vacancy acceptor density with Mg content.
ISSN:1043-8092