skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Photoluminescence spectroscopy of Cr3+ in β-Ga2O3 and (Al0.1Ga0.9)2O3

Journal Article · · Journal of Vacuum Science and Technology A
DOI:https://doi.org/10.1116/6.0002340· OSTI ID:1924546

Alloying β-Ga2O3 with Al2O3 to create (Al xGa1- x)2O3 enables ultra-wide bandgap materials suitable for applications deep into ultraviolet. In this work, photoluminescence (PL) spectra of Cr3+ were investigated in monoclinic single crystal β-Ga2O3, and 10 mol. % Al2O3 alloyed with β-Ga2O3, denoted β-(Al0.1Ga0.9)2O3 or AGO. Temperature-dependent PL properties were studied for Cr3+ in AGO and β-Ga2O3 from 295 to 16 K. For both materials at room temperature, the red-line emission doublet R1 and R2 occurs at 696 nm (1.78 eV) and 690 nm (1.80 eV), respectively, along with a broad emission band at 709 nm (1.75 eV). The linewidths for AGO are larger for all temperatures due to alloy broadening. For both materials, the R-lines blue-shift with decreasing temperature. The (lowest energy) R1 line is dominant at low temperatures due to the thermal population of the levels. For temperatures above ~50 K, however, the ratio of R2 to R1 peak areas is dominated by nonradiative combination.

Research Organization:
Washington State University, Pullman, WA (United States). Inst. for Shock Physics; Washington State Univ., Pullman, WA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
Grant/Contract Number:
NA0003957; FG02-07ER46386
OSTI ID:
1924546
Alternate ID(s):
OSTI ID: 1922570; OSTI ID: 1958028
Journal Information:
Journal of Vacuum Science and Technology A, Vol. 41, Issue 2; ISSN 0734-2101
Publisher:
American Vacuum Society / AIPCopyright Statement
Country of Publication:
United States
Language:
English

References (47)

From Organized High-Throughput Data to Phenomenological Theory using Machine Learning: The Example of Dielectric Breakdown journal February 2016
Hydrogenated cation vacancies in semiconducting oxides journal August 2011
Ruby films as surface temperature and pressure sensors journal May 1999
Calibration of the ruby R 1 and R 2 fluorescence shifts as a function of temperature from 0 to 600 K journal December 1992
Luminescence spectroscopy of Cr3+ ions in bulk single crystalline β-Ga2O3 journal June 2020
Correlation between electrical conductivity and luminescence properties in β-Ga 2 O 3 :Cr 3+ and β-Ga 2 O 3 :Cr,Mg single crystals journal May 2021
Temperature dependence of the ruby luminescence method for measuring high pressures journal December 1992
Review: Coefficients for Stress, Temperature, and Composition Effects in Fluorescence Measurements of Alumina journal January 2017
Multi-functional mesoporous β-Ga2O3: Cr3+ nanorod with long lasting near infrared luminescence for in vivo imaging and drug delivery journal January 2015
Multimodal Non-Contact Luminescence Thermometry with Cr-Doped Oxides journal September 2020
Optical properties of self-assembled ZnTe quantum dots grown by molecular-beam epitaxy journal February 2005
On optical properties and scintillation performance of emerging Ga2O3: Crystal growth, emission mechanisms and doping strategies journal December 2021
Influence of chromium concentration on the optical–electronic properties of ruby microstructures journal December 2009
Dependence of R fluorescence lines of rubies on Cr3+concentration at various temperatures, with implications for pressure calibrations in experimental apparatus journal July 2015
Temperature dependence of red luminescence in pure β-Ga2O3: An estimation of electron-phonon interaction journal September 2022
Fine‐Line Spectra of Chromium Ions in Crystals journal January 1962
Gallium vacancies in β-Ga 2 O 3 crystals journal May 2017
A new high pressure calibrant: β-Ga2O3:Cr journal January 1990
Absorption and luminescence of Cr3+-doped solid solutions of gallium-indium oxides conference March 1996
Photodarkening and dopant segregation in Cu-doped β-Ga2O3 Czochralski single crystals journal January 2022
Persistent Room-Temperature Photodarkening in Cu-Doped βGa2O3 journal February 2022
Structural and electronic properties of Ga 2 O 3 -Al 2 O 3 alloys journal June 2018
Investigation of temperature-dependent photoluminescence in multi-quantum wells journal July 2015
On the origin of red luminescence from iron-doped β -Ga 2 O 3 bulk crystals journal August 2020
Optical properties of β-Ga2O3:Cr3+ single crystals for tunable laser applications journal November 1987
Photoluminescence and Raman mapping of β-Ga2O3 journal October 2021
Atomic scale investigation of aluminum incorporation, defects, and phase stability in β -(Al x Ga 1−x ) 2 O 3 films journal May 2021
Dedicated Temperature Sensing With>tex<$C$>/tex<-Axis Oriented Single-Crystal Ruby>tex<$(rm Cr^3+:rm Al_2rm O_3)$>/tex journal February 2004
Synthesis and Polymorphism of Mixed Aluminum–Gallium Oxides journal February 2020
Optical and Microwave Properties of Trivalent Chromium in β - Ga 2 O 3 journal February 1965
Effect of extended defects on photoluminescence of gallium oxide and aluminum gallium oxide epitaxial films journal February 2022
$\beta$ -Ga2O3 MOSFETs for Radio Frequency Operation journal June 2017
Photoluminescence spectroscopy and energy-level analysis of metal-organic-deposited Ga 2 O 3 :Cr 3+ films journal September 2012
On the Absorption Spectra of Complex Ions. I journal September 1954
Wide Dynamic Range Thermometer Based on Luminescent Optical Cavities in Ga 2 O 3 :Cr Nanowires journal November 2021
Magneto-optical properties of Cr 3+ in β-Ga 2 O 3 journal August 2021
Electrical and optical properties of Zr doped β -Ga 2 O 3 single crystals journal July 2019
Low temperature cathodoluminescence study of Fe-doped β-Ga2O3 journal December 2019
Degenerate doping in β -Ga 2 O 3 single crystals through Hf-doping journal March 2020
Diode pumped cw ruby laser journal January 2019
Enhancing the luminescence yield of Cr3+ in β-Ga2O3 by proton irradiation journal June 2022
Alloyed β-(AlxGa1−x)2O3 bulk Czochralski single β-(Al0.1Ga0.9)2O3 and polycrystals β-(Al0.33Ga0.66)2O3, β-(Al0.5Ga0.5)2O3), and property trends journal April 2022
Effects of electron capture by impurity centers on the luminescent parameters of ?-Ga2O3:Cr crystals journal September 1983
THERMAL SHIFT AND BROADENING OF THE 2E - 4A2 ZERO-PHONON LINES IN β-ALUMINA : CR3+ CRYSTALS journal October 1985
First-principles calculations of structural, electrical, and optical properties of ultra-wide bandgap (Al$$_x$$Ga$$_{1-x}$$)$$_2$$O$$_3$$ alloys journal September 2021
Luminescence from β-Ga2O3: Cr3+ journal February 1988
Temperature-dependent photoluminescence in light-emitting diodes journal August 2014

Similar Records

Photoluminescence and Raman mapping of β-Ga2O3
Journal Article · Thu Oct 07 00:00:00 EDT 2021 · AIP Advances · OSTI ID:1924546

Photoluminescence of Cr3+ in β-Ga2O3 and (Al0.1Ga0.9)2O3 under pressure
Journal Article · Wed May 03 00:00:00 EDT 2023 · Journal of Applied Physics · OSTI ID:1924546

Al{sub 2}O{sub 3}:Cr{sup 3+} microfibers by hydrothermal route: Luminescence properties
Journal Article · Sat Sep 15 00:00:00 EDT 2012 · Materials Research Bulletin · OSTI ID:1924546