Enhancing optical gains in Si nanocrystals via hydrogenation and cerium ion doping

• Published in: Journal of applied physics Vol. 116; no. 4
• Main Authors: Wang, Dong-Chen, Chen, Jia-Rong, Li, Yan-Li, Song, Sheng-Chi, Guo, Wen-Ping, Lu, Ming
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 28.07.2014
• Subjects: Applied physics; Cerium; CERIUM ADDITIONS; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CORRECTIONS; DE-EXCITATION; Doping; EXCITATION; HYDROGENATION; LASER RADIATION; LIFETIME; LOSSES; Nanocrystals; NANOMATERIALS; NANOSTRUCTURES; OPTICAL PROPERTIES; Optical pumping; PHOTOLUMINESCENCE; POWER DENSITY; Pulsed lasers; SILICON

We report optical gain enhancements in Si nanocrystals (Si-NCs) via hydrogenation and Ce3+ ion doping. Variable stripe length technique was used to obtain gains. At 0.3 W/cm2 pumping power density of pulsed laser, net gains were observed together with gain enhancements after hydrogenation and/or Ce3...