Tuning the Band Gaps of Oxide and Halide Perovskite Compounds via Biaxial Strain in All Directions

2021 ◽  
Author(s):  
Corey Teply ◽  
Britt A. Tyler ◽  
Robert F. Berger
Keyword(s):  
Band Gaps ◽  
Biaxial Strain ◽  
Halide Perovskite

scholarly journals Ultra-broadband optical amplification at telecommunication wavelengths achieved by bismuth-activated lead iodide perovskites

2017 ◽  
Vol 5 (10) ◽  
pp. 2591-2596 ◽  
Author(s):  
Yang Zhou ◽  
Zi-Jun Yong ◽  
Wei Zhang ◽  
Ju-Ping Ma ◽  
Aditya Sadhanala ◽  
...  
Keyword(s):  
Band Gaps ◽  
Lead Iodide ◽  
Inherent Limitation ◽  
Optical Amplification ◽  
Halide Perovskite

It is extremely difficult to achieve hybrid halide perovskite semiconductors with luminescence at wavelengths longer than 1.0 μm, because of the inherent limitation of their band gaps.

scholarly journals Role of an external electric field on hybrid halide perovskite CH3NH3PbI3 band gaps

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Denghui Ji ◽  
Mula Na ◽  
Shuling Wang ◽  
Hong Zhang ◽  
Kun Zhu ◽  
...  
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Band Gaps ◽  
Halide Perovskite

scholarly journals Equal Footing of Thermal Expansion and Electron–Phonon Interaction in the Temperature Dependence of Lead Halide Perovskite Band Gaps

2019 ◽  
Vol 10 (11) ◽  
pp. 2971-2977 ◽  
Author(s):  
Adrián Francisco-López ◽  
Bethan Charles ◽  
Oliver J. Weber ◽  
M. Isabel Alonso ◽  
Miquel Garriga ◽  
...  
Keyword(s):  
Thermal Expansion ◽  
Temperature Dependence ◽  
Band Gaps ◽  
Phonon Interaction ◽  
Equal Footing ◽  
Electron Phonon Interaction ◽  
Halide Perovskite ◽  
Lead Halide

Efficient wide band gap double cation – double halide perovskite solar cells

2017 ◽  
Vol 5 (7) ◽  
pp. 3203-3207 ◽  
Author(s):  
Dávid Forgács ◽  
Daniel Pérez-del-Rey ◽  
Jorge Ávila ◽  
Cristina Momblona ◽  
Lidón Gil-Escrig ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Gap ◽  
Perovskite Solar Cells ◽  
Wide Band ◽  
Band Gaps ◽  
Wide Band Gap ◽  
Halide Perovskite

We study the properties of the series of compounds Cs0.15FA0.85Pb(BrxI1−x)3, aiming to develop an efficient complementary absorber for MAPbI3 in all-perovskite tandems. A bromide content of 0.7 leads to a band gap of 2 eV and a maximum PCE of 11.5% in solar cells, among the highest reported for band gaps wider than 1.8 eV.

Electronic properties of monolayer molybdenum dichalcogenides under strains

2015 ◽  
Vol 1726 ◽  
Author(s):  
J. Sugimoto ◽  
K. Shintani
Keyword(s):  
First Principles ◽  
Tensile Strain ◽  
Compressive Strain ◽  
Band Gaps ◽  
First Principles Calculation ◽  
Honeycomb Lattice ◽  
Biaxial Strain ◽  
Electronic Band ◽  
Zigzag Direction ◽  
Electronic Band Structures

ABSTRACTThe electronic band structures of monolayer molybdenum dichalcogenides, MoS2, MoSe2, and MoTe2 under either uniaxial or biaxial strain are calculated using first-principles calculation with the GW method. The imposed uniaxial strain is in the zigzag direction in the honeycomb lattice whereas the imposed biaxial strain is in the zigzag and armchair directions. It is found that the band gaps of these dichalcogenides almost linearly increase with the decrease of the magnitude of compressive strain, reach their maxima at some compressive strain, and then decrease almost linearly with the increase of tensile strain. It is also found their maximum band gaps are direct bandgaps.

Shape-, Size-, and Composition-Controlled Thallium Lead Halide Perovskite Nanowires and Nanocrystals with Tunable Band Gaps

2018 ◽  
Vol 30 (9) ◽  
pp. 2973-2982 ◽  
Author(s):  
Parth Vashishtha ◽  
Dani Z. Metin ◽  
Matthew E. Cryer ◽  
Kai Chen ◽  
Justin M. Hodgkiss ◽  
...  
Keyword(s):  
Band Gaps ◽  
Halide Perovskite ◽  
Lead Halide
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