Temperature-Dependent Electroabsorption Spectra and Exciton Binding Energy in a Perovskite CH3NH3PbI3 Nanocrystalline Film

2020 ◽  
Vol 3 (12) ◽  
pp. 11830-11840
Author(s):  
Morihiko Hamada ◽  
Shailesh Rana ◽  
Efat Jokar ◽  
Kamlesh Awasthi ◽  
Eric Wei-Guang Diau ◽  
...  
Keyword(s):  
Binding Energy ◽  
Exciton Binding Energy ◽  
Nanocrystalline Film ◽  
Temperature Dependent

Temperature-Dependent Electroabsorption and Electrophotoluminescence and Exciton Binding Energy in MAPbBr3 Perovskite Quantum Dots

2019 ◽  
Vol 123 (32) ◽  
pp. 19927-19937 ◽  
Author(s):  
Shailesh Rana ◽  
Kamlesh Awasthi ◽  
Sumit S. Bhosale ◽  
Eric Wei-Guang Diau ◽  
Nobuhiro Ohta
Keyword(s):  
Quantum Dots ◽  
Binding Energy ◽  
Exciton Binding Energy ◽  
Temperature Dependent ◽  
Perovskite Quantum Dots

scholarly journals Temperature-dependent studies of exciton binding energy and phase-transition suppression in (Cs,FA,MA)Pb(I,Br)3 perovskites

APL Materials ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 031113 ◽  
Author(s):  
Fabian Ruf ◽  
Meltem F. Aygüler ◽  
Nadja Giesbrecht ◽  
Bettina Rendenbach ◽  
Alice Magin ◽  
...  
Keyword(s):  
Phase Transition ◽  
Binding Energy ◽  
Exciton Binding Energy ◽  
Temperature Dependent

Observations and calculations of the exciton binding energy in (In,Ga)As/GaAs strained-quantum-well heterostructures

1990 ◽  
Vol 41 (2) ◽  
pp. 1090-1094 ◽  
Author(s):  
Karen J. Moore ◽  
Geoffrey Duggan ◽  
Karl Woodbridge ◽  
Christine Roberts
Keyword(s):  
Binding Energy ◽  
Quantum Well ◽  
Exciton Binding Energy ◽  
Strained Quantum Well

Low Temperature Photoluminescence Spectroscopy of Defect and Interband Transitions in CdSexTe1-x Thin Films

MRS Advances ◽  
2018 ◽  
Vol 3 (56) ◽  
pp. 3293-3299 ◽  
Author(s):  
Niraj Shrestha ◽  
Corey R. Grice ◽  
Ebin Bastola ◽  
Geethika K. Liyanage ◽  
Adam B. Phillips ◽  
...  
Keyword(s):  
Thin Films ◽  
Binding Energy ◽  
Band Gap Energy ◽  
Band Edge Emission ◽  
Alloy Thin Film ◽  
Defect Analysis ◽  
Temperature Dependent ◽  
Edge Emission ◽  
Intensity Measurements ◽  
Shallow Defect

We present the defect analysis by photoluminescence (PL) spectroscopy of CdSexTe1-x thin films, grown with varying Se content by a co-sputtered deposition method. We observe a peak at 1.203 eV in the CdSexTe1-x film for x = 0.21, which shifts towards higher energies with increase in laser power. This peak was assigned to a donor-to-acceptor (DAP) transition, with a measured j-shift of ∼4.7 meV/decade. Temperature dependent PL intensity measurements confirm that the observed DAP peak involves a shallow defect state of binding energy ∼34.7 meV. In contrast, a free-to-bound (FB) peak at 1.294 eV involving a shallow defect of binding energy ∼18.3 meV was observed in the CdSexTe1-x film for x = 0.14. Additionally, we observe band edge emission at 1.452 eV and 1.448 eV in CdSexTe1-x films for x = 0.14 and x = 0.21 respectively. Our analysis shows that the Se concentration not only changes the band gap energy of the resulting CdSexTe1-x alloy thin film, but also modifies the nature of the dominant observed defect emission.

scholarly journals Capturing excitonic and polaronic effects in lead iodide perovskites from many-body perturbation theory

2021 ◽  
Author(s):  
Pooja Basera ◽  
Arunima Singh ◽  
Deepika Gill ◽  
Saswata Bhattacharya
Keyword(s):  
Optical Properties ◽  
Perturbation Theory ◽  
Binding Energy ◽  
Electronic Properties ◽  
Effective Mass ◽  
Exciton Binding Energy ◽  
Many Body ◽  
Energy Materials ◽  
Lead Iodide ◽  
Many Body Perturbation Theory

Lead iodide perovskites have attracted considerable interest as promising energy-materials. However, till date, several key electronic properties such as optical properties, effective mass, exciton binding energy and the radiative exciton...

scholarly journals Exciton Binding Energy in Extremely Shallow Quantum Wells

1995 ◽  
Vol 87 (2) ◽  
pp. 528-532 ◽  
Author(s):  
J. Kossut ◽  
J.K. Furdyna
Keyword(s):  
Binding Energy ◽  
Quantum Wells ◽  
Exciton Binding Energy
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