Robust Optical Properties of Sandwiched Lateral Composition Modulation GaInP Structure Grown by Molecular Beam Epitaxy: Article No. 262103

Kwangwook Park, Seokjin Kang, Sooraj Ravindran, Jung-Wook Min, Hyeong-Yong Hwang, Young-Dahl Jho, Yong Lee

Research output: Contribution to journalArticlepeer-review

3 Scopus Citations

Abstract

Double-hetero structure lateral composition modulated (LCM) GaInP and sandwiched LCM GaInP having the same active layer thickness were grown and their optical properties were compared. Sandwiched LCM GaInP showed robust optical properties due to periodic potential nature of the LCM structure, and the periodicity was undistorted even for thickness far beyond the critical layer thickness. A thick LCM GaInP structure with undistorted potential that could preserve the properties of native LCM structure was possible by stacking thin LCM GaInP structures interspaced with strain compensating GaInP layers. The sandwiched structure could be beneficial in realizing the LCM structure embedded high efficiency solar cells.
Original languageAmerican English
Number of pages5
JournalApplied Physics Letters
Volume109
Issue number26
DOIs
StatePublished - 2016

NREL Publication Number

  • NREL/JA-5K00-67757

Keywords

  • optical properties
  • photoluminescence
  • semiconductor growth
  • solar cells
  • stress relaxation

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