Photoluminescence spectral broadening, chirality transfer and amplification of chiral perovskite materials (R-X-p-mBZA)2PbBr4 (X = H, F, Cl, Br) regulated by van der Waals and halogen atoms interactions

2020 ◽  
Vol 22 (30) ◽  
pp. 17299-17305
Author(s):  
Chenyang Zhou ◽  
Ya Chu ◽  
Linlin Ma ◽  
Yingqian Zhong ◽  
Chao Wang ◽  
...  
Keyword(s):  
Van Der Waals ◽  
Chiral Molecules ◽  
Spectral Broadening ◽  
Chirality Transfer ◽  
Inorganic Hybrid ◽  
Halogen Atoms ◽  
Perovskite Materials ◽  
A Site

We introduced halogen-substituted chiral molecules as A-site cations to synthesize a series of novel organic–inorganic hybrid 2D chiral perovskite materials (R-X-p-mBZA)2PbBr4 (X = H, F, Cl, Br; p: para-position; mBZA = α-methylbenzylamine).

scholarly journals Physicochemical properties and structural dynamics of organic–inorganic hybrid [NH3(CH2)3NH3]ZnX4 (X = Cl and Br) crystals

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ae Ran Lim ◽  
Sun Ha Kim ◽  
Yong Lak Joo
Keyword(s):  
Structural Dynamics ◽  
Chemical Shifts ◽  
Lattice Relaxation ◽  
Magic Angle Spinning ◽  
Spin Lattice Relaxation ◽  
Resonance Spectroscopy ◽  
Magic Angle ◽  
Scanning Calorimetry ◽  
Inorganic Hybrid ◽  
Halogen Atoms

AbstractThe physical properties of the organic–inorganic hybrid crystals having the formula [NH3(CH2)3NH3]ZnX4 (X = Cl, Br) were investigated. The phase transition temperatures (TC; 268K for Cl and 272K for Br) of the two crystals bearing different halogen atoms in their skeletons were determined through differential scanning calorimetry. The thermodynamic properties of the two crystals were investigated through thermogravimetric analysis. The structural dynamics, particularly the role of the [NH3(CH2)3NH3] cation, were probed through 1H and 13C magic-angle spinning nuclear magnetic resonance spectroscopy as a function of temperature. The 1H and 13C NMR chemical shifts did not show any changes near TC. In addition, the 1H spin–lattice relaxation time (T1ρ) varied with temperature, whereas the 13C T1ρ values remained nearly constant at different temperatures. The T1ρ values of the atoms in [NH3(CH2)3NH3]ZnCl4 were higher than those in [NH3(CH2)3NH3]ZnBr4. The observed differences in the structural dynamics obtained from the chemical shifts and T1ρ values of the two compounds can be attributed to the differences in the bond lengths and halogen atoms. These findings can provide important insights or potential applications of these crystals.

Research Progress of the Stability and Photodetectors Applications of Organic-inorganic Hybrid Halide Perovskite Materials （Invited）

2021 ◽  
Vol 50 (1) ◽  
pp. 26-44
Author(s):  
姚丽娟 Lijuan YAO ◽  
方铉 Xuan FANG ◽  
房丹 Dan FANG ◽  
高晨皓 Chenhao GAO ◽  
刘胜达 Shengda LIU ◽  
...  
Keyword(s):  
Research Progress ◽  
Inorganic Hybrid ◽  
Perovskite Materials ◽  
Halide Perovskite ◽  
The Stability

scholarly journals Tuning octahedral tilts and the polar nature of A-site deficient perovskites

2019 ◽  
Vol 55 (18) ◽  
pp. 2609-2612 ◽  
Author(s):  
Dashnor Beqiri ◽  
Vanessa Cascos ◽  
Jennie Roberts-Watts ◽  
Ewan R. Clark ◽  
Eric Bousquet ◽  
...  
Keyword(s):  
Structural Chemistry ◽  
Perovskite Materials ◽  
A Site

This work explores the possibility of tuning the structural chemistry of A-site deficient perovskite materials Ln1/3NbO3, and the balance between proper and hybrid-improper mechanisms for polar behaviour in these systems.

Chirality transfer based on dynamic covalent chemistry: from small chiral molecules to supramolecules

2019 ◽  
Vol 55 (66) ◽  
pp. 9861-9864 ◽  
Author(s):  
Panpan Sun ◽  
Shujing Ren ◽  
Aoli Wu ◽  
Na Sun ◽  
Lijuan Shi ◽  
...  
Keyword(s):  
Small Molecule ◽  
Chiral Molecules ◽  
Chirality Transfer ◽  
Dynamic Covalent Chemistry

Chirality transfer from small molecule to supramolecule was successfully achieved via regulation of dynamic covalent chemistry.

scholarly journals Evaluation of commercial Pb-sources for the A-site cation in the production of lead-based perovskite materials.

2020 ◽  
Author(s):  
Anna Duke ◽  
Marissa Ringgold ◽  
Timothy Boyle ◽  
Douglas Read
Keyword(s):  
Perovskite Materials ◽  
A Site

Surface recrystallized stable 2D-3D graded perovskite solar cells for efficiency beyond 21%†

2021 ◽  
Author(s):  
Rabindranath Garai ◽  
Ritesh Kant Gupta ◽  
Maimur Hossain ◽  
Parameswar K Iyer
Keyword(s):  
Solar Cells ◽  
Rapid Growth ◽  
Perovskite Solar Cells ◽  
Ambient Conditions ◽  
Inorganic Hybrid ◽  
Perovskite Materials ◽  
Hybrid Perovskite

Recently, organic-inorganic hybrid perovskite solar cells (PSCs) have experienced a rapid growth in terms of efficiency. However, the instability of hybrid perovskite materials towards ambient conditions restricts its commercialization. Formation...

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...

scholarly journals Band-Gap Tuning of Organic–Inorganic Hybrid Palladium Perovskite Materials for a Near-Infrared Optoelectronics Response

ACS Omega ◽  
2018 ◽  
Vol 3 (10) ◽  
pp. 13960-13966 ◽  
Author(s):  
Huawei Zhou ◽  
Xiaolei Cui ◽  
Cang Yuan ◽  
Jiawen Cui ◽  
Shaozhen Shi ◽  
...  
Keyword(s):  
Band Gap ◽  
Near Infrared ◽  
Inorganic Hybrid ◽  
Perovskite Materials ◽  
Band Gap Tuning
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