Differential analysis of band-edge photoluminescence spectra of germanium single crystals with different orientations under biaxial tensile strains

2016 ◽  
Vol 58 (6) ◽  
pp. 1081-1084
Author(s):  
A. M. Emel’yanov
Keyword(s):  
Single Crystals ◽  
Band Edge ◽  
Differential Analysis ◽  
Photoluminescence Spectra ◽  
Biaxial Tensile ◽  
Tensile Strains

scholarly journals Annealing Behavior of The Photoluminescence Lines in CdTe and Znx Cd1−x Te Single Crystals

1989 ◽  
Vol 161 ◽  
Author(s):  
J. Gonzalez-Hernandez ◽  
A. Reyes-Mena ◽  
Elias Lopez-Cruz ◽  
D.D. Allred ◽  
Worth P. Allred
Keyword(s):  
Single Crystals ◽  
Mixed Crystals ◽  
Band Edge ◽  
Near Band Edge ◽  
Band Edge Emission ◽  
Photoluminescence Spectra ◽  
Edge Emission ◽  
Annealing Behavior ◽  
Pl Spectra ◽  
Compositional Range

ABSTRACTThe main lines in the photoluminescence spectra of Zn1Cd1−xTe single crystals grown by a modified Bridgman method in the compositional range of 0 ≤ X ≤ 0.25 have been identified. All crystals show only near-band-edge emission. To assist in the identification, various samples with different compositions were annealed under a Cd atmosphere. In the pure crystals, the prominent (A°,X) bound exciton line, as well as the doublet at longer wavelengths, disappear after the annealing. In contrast, the treatments do not change significantly the PL spectra of the mixed crystals.

scholarly journals Band‐Edge Exciton Fine Structure and Exciton Recombination Dynamics in Single Crystals of Layered Hybrid Perovskites

2019 ◽  
Vol 30 (6) ◽  
pp. 1907979 ◽  
Author(s):  
Hong‐Hua Fang ◽  
Jie Yang ◽  
Sampson Adjokatse ◽  
Eelco Tekelenburg ◽  
Machteld E. Kamminga ◽  
...  
Keyword(s):  
Fine Structure ◽  
Single Crystals ◽  
Band Edge ◽  
Exciton Recombination ◽  
Recombination Dynamics

Photoluminescence spectra of undoped and Er3+-doped MgAl2Se4 and CaAl2Se4 single crystals

1999 ◽  
Vol 86 (11) ◽  
pp. 6596-6598 ◽  
Author(s):  
Moon-Seog Jin ◽  
Tae-Young Park ◽  
Hyung-Gon Kim ◽  
Sung-Hyu Choe ◽  
Ho-Jun Song ◽  
...  
Keyword(s):  
Single Crystals ◽  
Photoluminescence Spectra

Time-resolved photoluminescence in CdIn2S4

1987 ◽  
Vol 65 (3) ◽  
pp. 204-207 ◽  
Author(s):  
S. Charbonneau ◽  
E. Fortin ◽  
J. Beauvais
Keyword(s):  
Single Crystals ◽  
Free Electron ◽  
Continuous Wave ◽  
Time Window ◽  
Photoluminescence Spectra ◽  
Time Resolved ◽  
Spectral Bands ◽  
Window Technique ◽  
Donor Acceptor ◽  
Time Resolved Photoluminescence

Photoluminescence spectra of CdIn2S4 single crystals at 1.8 K under both continuous-wave (CW) and pulsed excitation were obtained. In the latter case, a variable time-window technique was used to observe the time evolution of the spectra between 0 and 100 μs. In contrast to previous studies, four spectral bands were observed under both CW and pulsed, intrinsic or extrinsic excitation. In particular, two bands previously unobserved under extrinsic excitation were detected at 1.35 and 1.68 eV, and have been attributed to donor–acceptor pairs and free-electron to acceptor transitions respectively.

EXCITONIC PHOTOLUMINESCENCE IN PENTACENE SINGLE CRYSTAL

2001 ◽  
Vol 15 (28n30) ◽  
pp. 3753-3756 ◽  
Author(s):  
T. AOKI-MATSUMOTO ◽  
K. FURUTA ◽  
T. YAMADA ◽  
H. MORIYA ◽  
K. MIZUNO ◽  
...  
Keyword(s):  
Absorption Band ◽  
Single Crystals ◽  
Lower Energy ◽  
Luminescence Band ◽  
Laser Light ◽  
Stokes Shift ◽  
Photoluminescence Spectra ◽  
Exciton Luminescence ◽  
Exciton Absorption ◽  
Exciton Absorption Band

Photoluminescence of pentacene single crystals is studied in the temperature range of 7 K to 200 K under excitation with He-Ne laser light. Photoluminescence spectra consist of four broad bands, L1 to L4. The highest energy band, L1, located close to the lowest exciton absorption band mainly appears for //b-polarization. The intensity of the second one, L2, with Stokes-shift of about 1500 cm -1, decreases as temperature rises above 30 K and disappears at 100 K. The bands, L3 and L4, which are located at lower energy, are observed at higher temperatures up to 200 K. Based on their energy positions, the band L2 is assigned to a shallow self-trapped exciton luminescence band, and the bands L3 and L4 to deep self-trapped exciton luminescence bands. By comparing this result with reported result on tetracene crystals, self-trapped excitons are considered to be more stable in pentacene.

Temperature dependence of the photoluminescence spectra of single crystals of CuInTe2

1997 ◽  
Vol 82 (9) ◽  
pp. 4500-4503 ◽  
Author(s):  
C. Rincón ◽  
S. M. Wasim ◽  
G. Marı́n ◽  
G. Sánchez Pérez ◽  
G. Bacquet
Keyword(s):  
Temperature Dependence ◽  
Single Crystals ◽  
Photoluminescence Spectra
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