Title :
Photoluminescence upconversion study of GaN nanowires: Potential for optical refrigeration
Author :
Ruolin Chen ; Guan Sun ; Ding, Yujie J. ; Nguyen, Hieu P. T. ; Zetian Mi
Author_Institution :
Dept. of Electr. & Comput. Eng., Lehigh Univ., Bethlehem, PA, USA
Abstract :
Up-converted photoluminescence of GaN nanowires is observed at the temperature above 375 K. At 475 K, the mechanism of the photoluminescence was identified as phonon-assisted bandtail emission. Such a phenomenon contributes to optical refrigeration.
Keywords :
III-V semiconductors; gallium compounds; laser cooling; nanowires; photoluminescence; wide band gap semiconductors; GaN; nanowires; optical refrigeration; phonon-assisted bandtail emission; photoluminescence upconversion; temperature 475 K; Cooling; Gallium nitride; Laser excitation; Nanowires; Phonons; Photoluminescence; Plasma temperature;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
