title: Practical photoluminescence and photoreflectance spectroscopic system for optical characterization of semiconductor devices.
abstract: We present a practical experimental design for performing photoluminescence (PL) and photoreflectance (PR) measurements of semiconductors with only one PL spectroscopic system. The measurement setup is more cost efficient than typical PL-plus-PR systems. The design of the experimental setup of the PL-PR system is described in detail. Measurements of two actual device structures, a high-electron-mobility transistor (HEMT) and a double heterojunction-bipolar transistor (DHBT), are carried out by using this design. The experimental PL and PR spectra of the HEMT device, as well as polarized-photoreflectance (PPR) spectra of the DHBT structure, are analyzed in detailed and discussed. The experimental analyses demonstrate the well-behaved performance of this PL-PR design.
authors.forename: Ching-Hwa
authors.initials: CH
authors.lastname: Ho
authors.forename: Kuo-Wei
authors.initials: KW
authors.lastname: Huang
authors.forename: Yu-Shyan
authors.initials: YS
authors.lastname: Lin
authors.forename: Der-Yuh
authors.initials: DY
authors.lastname: Lin