scholarly journals Exciton diffusion in two-dimensional metal-halide perovskites

2020 ◽  
Author(s):  
Michael Seitz ◽  
Alvaro J. Magdaleno ◽  
Nerea Alcázar-Cano ◽  
Marc Meléndez ◽  
Tim J. Lubbers ◽  
...  
Keyword(s):  
Metal Halide ◽  
Two Dimensional ◽  
Exciton Diffusion ◽  
Halide Perovskites

scholarly journals Exciton diffusion in two-dimensional metal-halide perovskites

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Michael Seitz ◽  
Alvaro J. Magdaleno ◽  
Nerea Alcázar-Cano ◽  
Marc Meléndez ◽  
Tim J. Lubbers ◽  
...  
Keyword(s):  
Metal Halide ◽  
Two Dimensional ◽  
Exciton Diffusion ◽  
Halide Perovskites

Two-Dimensional Metal Halide Perovskites: Theory, Synthesis, and Optoelectronics

Small Methods ◽  
2017 ◽  
Vol 1 (3) ◽  
pp. 1600018 ◽  
Author(s):  
Chengxue Huo ◽  
Bo Cai ◽  
Zhao Yuan ◽  
Biwu Ma ◽  
Haibo Zeng
Keyword(s):  
Metal Halide ◽  
Two Dimensional ◽  
Halide Perovskites

scholarly journals Enhanced screening and spectral diversity in many-body elastic scattering of excitons in two-dimensional hybrid metal-halide perovskites

2019 ◽  
Vol 1 (3) ◽  
Author(s):  
Félix Thouin ◽  
Daniele Cortecchia ◽  
Annamaria Petrozza ◽  
Ajay Ram Srimath Kandada ◽  
Carlos Silva
Keyword(s):  
Elastic Scattering ◽  
Metal Halide ◽  
Two Dimensional ◽  
Many Body ◽  
Halide Perovskites

Colossal Barocaloric Effects with Ultralow Hysteresis in Two-Dimensional Metal–Halide Perovskites

2021 ◽  
Author(s):  
Jarad Mason ◽  
Jinyoung Seo ◽  
Ryan McGillicuddy ◽  
Adam Slavney ◽  
Selena Zhang ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Phase Transitions ◽  
Solid State ◽  
Hydrostatic Pressure ◽  
Metal Halide ◽  
Two Dimensional ◽  
Vapor Compression ◽  
Entropy Changes ◽  
Halide Perovskites ◽  
Solid State Cooling

Abstract Nearly 4,400 TWh of electricity—20% of the total consumed in the world—is used each year by refrigerators, air conditioners, and heat pumps for cooling. In addition to the 2.3 Gt of carbon dioxide emitted during the generation of this electricity, the vapor-compression-based devices that provided the bulk of this cooling emitted fluorocarbon refrigerants with a global warming potential equivalent to 1.5 Gt of carbon dioxide into the atmosphere. With population and economic growth expected to dramatically increase over the next several decades, the development of alternative cooling technologies with improved efficiency and reduced emissions will be critical to meeting global cooling needs in a more sustainable fashion. Barocaloric materials, which undergo thermal changes in response to applied hydrostatic pressure, offer the potential for solid-state cooling with high energy efficiency and zero direct emissions, as well as faster start-up times, quieter operation, greater amenability to miniaturization, and better recyclability than conventional vapor-compression systems. Efficient barocaloric cooling requires materials that undergo reversible phase transitions with large entropy changes, high sensitivity to hydrostatic pressure, and minimal hysteresis, the combination of which has been challenging to achieve in existing barocaloric materials. Here, we report a new mechanism for achieving colossal barocaloric effects near ambient temperature that exploits the large volume and conformational entropy changes of hydrocarbon chain-melting transitions within two-dimensional metal–halide perovskites. Significantly, we show how the confined nature of these order–disorder phase transitions and the synthetic tunability of layered perovskites can be leveraged to reduce phase transition hysteresis through careful control over the inorganic–organic interface. The combination of ultralow hysteresis (< 1.5 K) and high barocaloric coefficients (> 20 K/kbar) leads to large reversible isothermal entropy changes (> 200 J/kg•K) at record-low pressures (< 300 bar). We anticipate that these results will help facilitate the development of barocaloric cooling technologies and further inspire new materials and mechanisms for efficient solid-state cooling.

Interlayer Triplet-Sensitized Luminescence in Layered Two-Dimensional Hybrid Metal-Halide Perovskites

2021 ◽  
pp. 4079-4096
Author(s):  
YunHui L. Lin ◽  
Jeffrey L. Blackburn ◽  
Matthew C. Beard ◽  
Justin C. Johnson
Keyword(s):  
Metal Halide ◽  
Two Dimensional ◽  
Sensitized Luminescence ◽  
Halide Perovskites

Layer-controlled two-dimensional perovskites: synthesis and optoelectronics

2017 ◽  
Vol 5 (23) ◽  
pp. 5610-5627 ◽  
Author(s):  
Jakub Jagielski ◽  
Sudhir Kumar ◽  
Wen-Yueh Yu ◽  
Chih-Jen Shih
Keyword(s):  
Low Cost ◽  
Metal Halide ◽  
Two Dimensional ◽  
Solution Processed ◽  
Halide Perovskites

Solution-processed layered-controlled 2D metal halide perovskites are emerging as one of the most promising candidates for low-cost photovoltaics and optoelectronics.

Exploring the Ruddlesden−Popper Layered Organic-Inorganic Hybrid Semiconducting Perovskite for Visible-Blind Ultraviolet Photodetection

CrystEngComm ◽  
2021 ◽  
Author(s):  
Yuyin Wang ◽  
Bin Su ◽  
Guoming Lin ◽  
Huiru Lou ◽  
Shouxin Wang ◽  
...  
Keyword(s):  
Physical Properties ◽  
Three Dimensional ◽  
Metal Halide ◽  
Two Dimensional ◽  
Inorganic Hybrid ◽  
Perovskite Materials ◽  
Halide Perovskites ◽  
P Type ◽  
Visible Blind

Compared to the three-dimensional (3D) perovskite materials, the Ruddlesden−Popper (R-P) type two-dimensional (2D) organic-inorganic metal halide perovskites have indicated specific unique physical properties that include moisture-stable behaviours, exciton effects, and...

Two dimensional metal halide perovskites: Promising candidates for light-emitting diodes

2019 ◽  
Vol 37 ◽  
pp. 97-110 ◽  
Author(s):  
Lu Zhang ◽  
Yucheng Liu ◽  
Zhou Yang ◽  
Shengzhong (Frank) Liu
Keyword(s):  
Light Emitting Diodes ◽  
Metal Halide ◽  
Two Dimensional ◽  
Light Emitting ◽  
Halide Perovskites

Role of Spacer Cations and Structural Distortion in Two-Dimensional Germanium Halide Perovskites

2021 ◽  
Author(s):  
Lorenzo Malavasi ◽  
Luca Bindi ◽  
Mauro Coduri ◽  
Filippo De Angelis ◽  
Francesco Fracassi ◽  
...  
Keyword(s):  
Optical Properties ◽  
Metal Halide ◽  
Structural Distortion ◽  
Two Dimensional ◽  
Structure Property ◽  
Structural Distortions ◽  
Metal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite

The elucidation of the structure-property correlation in 2D metal halide perovskite is a key issue to understand the dependence of optical properties on structural distortions and to design novel tailored...

scholarly journals Origin of vertical orientation in two-dimensional metal halide perovskites and its effect on photovoltaic performance

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Alexander Z. Chen ◽  
Michelle Shiu ◽  
Jennifer H. Ma ◽  
Matthew R. Alpert ◽  
Depei Zhang ◽  
...  
Keyword(s):  
Photovoltaic Performance ◽  
Metal Halide ◽  
Two Dimensional ◽  
Vertical Orientation ◽  
Halide Perovskites
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