This book provides a comprehensive overview of the state-of-the-art in group III-nitride based ultraviolet LED and laser technologies, covering different substrate approaches, a review of optical, electronic and structural properties of In Al Ga N materials as well as various optoelectronic components. In addition, the book gives an overview of a number of key application areas for UV emitters and detectors, including water purification, phototherapy, sensing, and UV curing. The book is written for researchers and graduate level students in the area of semiconductor materials, optoelectronics and devices as well as developers and engineers in the various application fields of UV emitters and detectors.
Table of Content
Introduction.- Low-defect density Al N and Al Ga N on sapphire substrate.- HVPE of low-defect density Al Ga N/sapphire templates.- Growth and structural properties of bulk Al N substrates.- Optical properties of Al Ga N QWs for UV emitters.- Effect of threading dislocations and point defect on IQE of UV emitters.- Optical polarization and light extraction from UV LEDs.- High-power UV LEDs.- Solar- and visible blind UV photodetectors.- Gain in Al Ga N QW laser heterostructures.- Al Ga N UV laser diodes.- Water purification with UV LEDs.- Application of UV emitters in phototherapy.- UV emitters in sensing applications.- Applications of LEDs for UV-curing.
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