scholarly journals Complete optical absorption in hybrid halide perovskites based on critical coupling in the communication band

2020 ◽  
Vol 28 (9) ◽  
pp. 14151 ◽  
Author(s):  
Zi-qiang Cheng ◽  
Xin Luo ◽  
Liang Xu ◽  
Xiang Zhai ◽  
Ling-ling Wang
Keyword(s):  
Optical Absorption ◽  
Critical Coupling ◽  
Halide Perovskites

scholarly journals Gain-assisted critical coupling for enhanced optical absorption in graphene

2021 ◽  
Vol 32 (20) ◽  
pp. 205202
Author(s):  
Tingting Liu ◽  
Chaobiao Zhou ◽  
Shuyuan Xiao
Keyword(s):  
Optical Absorption ◽  
Critical Coupling

scholarly journals Halide perovskites: third generation photovoltaic materials empowered by metavalent bonding

2020 ◽  
Author(s):  
Matthias Wuttig ◽  
Carl-Friedrich Schön ◽  
Mathias Schumacher ◽  
John Robertson ◽  
Pavlo Golub ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Charge Carrier Mobility ◽  
Third Generation ◽  
Covalent Bonds ◽  
Effective Masses ◽  
Photovoltaic Materials ◽  
Halide Perovskites ◽  
Lattice Distortions ◽  
High Optical Absorption ◽  
Large Charge

Abstract Third-generation photovoltaic (PV) materials combine many advantageous properties, including a high optical absorption together with a large charge carrier mobility, facilitated by small effective masses. Halide perovskites (ABX3, where X = I, Br or Cl) appear to be the most promising third-generation PV materials at present. Their opto-electronic properties are governed by the B-X bond. A quantum-chemical bond analysis reveals that this bond differs significantly from ionic, metallic or covalent bonds. Instead, it is better regarded as metavalent, since it shares approximately one p-electron between adjacent atoms. The resulting s–bond is half-filled, which causes pronounced optical absorption. Electron transfer and lattice distortions open a moderate band gap, resulting in charge carriers with small effective masses. Hence metavalent bonding explains the favorable PV properties of halide perovskites. This is summarized in a map for different bond types, which provides a blueprint to design third-generation PV materials.

scholarly journals Optical Absorption‐Based In Situ Characterization of Halide Perovskites

2020 ◽  
Vol 10 (26) ◽  
pp. 1903587 ◽  
Author(s):  
Finn Babbe ◽  
Carolin M. Sutter‐Fella
Keyword(s):  
Optical Absorption ◽  
In Situ Characterization ◽  
Halide Perovskites

scholarly journals Alloying a Single and a Double Perovskite: A Cu+/2+ Mixed-Valence Layered Halide Perovskite with Strong Optical Absorption

2021 ◽  
Author(s):  
Bridget Connor ◽  
Rebecca Smaha ◽  
Jiayi Li ◽  
Aryeh Gold-Parker ◽  
Alexander Heyer ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Mixed Valence ◽  
Double Perovskite ◽  
Optoelectronic Properties ◽  
Octahedral Sites ◽  
Halide Perovskites ◽  
Halide Perovskite

Introducing heterovalent cations at the octahedral sites of halide perovskites can substantially change their optoelectronic properties. Yet, in most cases, only small amounts of such metals can be incorporated as...

Organometallic Halide Perovskites: Sharp Optical Absorption Edge and Its Relation to Photovoltaic Performance

2014 ◽  
Vol 5 (6) ◽  
pp. 1035-1039 ◽  
Author(s):  
Stefaan De Wolf ◽  
Jakub Holovsky ◽  
Soo-Jin Moon ◽  
Philipp Löper ◽  
Bjoern Niesen ◽  
...  
Keyword(s):  
Optical Absorption ◽  
Absorption Edge ◽  
Photovoltaic Performance ◽  
Optical Absorption Edge ◽  
Halide Perovskites

Optical absorption in PdH

1982 ◽  
Vol 43 (2) ◽  
pp. 323-328 ◽  
Author(s):  
M.A. Khan ◽  
R. Riedinger
Keyword(s):  
Optical Absorption
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