Towards Fluorinated Ruddlesden-Popper Perovskites with Enhanced Physical Properties: A Study on (3-FC6H4CH2CH2NH3)2PbI4 Single Crystals

2021 ◽  
Author(s):  
Xiangxin Tian ◽  
Zhaoxing Hu ◽  
Zeliang Gao ◽  
Yongzhuan Zhang ◽  
Chuanming Li ◽  
...  
Keyword(s):  
Physical Properties ◽  
Single Crystals ◽  
Molecular Design ◽  
Structural Diversity ◽  
Environmental Stability ◽  
Two Dimensional ◽  
Design Strategies ◽  
Rational Molecular Design ◽  
Related Application

Quasi two-dimensional Ruddlesden-Popper perovskites (RPPs) have drawn unprecedented research interests for their superior long-term environmental stability, abundant structural diversity, and favorable performance in energy-related application scenario. Rational molecular design strategies,...

Triplet harvesting aryl carbonyl-based luminescent materials: progress and prospective

2021 ◽  
Author(s):  
Lifen Chen ◽  
Wen-Cheng Chen ◽  
Zhiwen Yang ◽  
Ji-Hua Tan ◽  
Shaomin Ji ◽  
...  
Keyword(s):  
Physical Properties ◽  
Molecular Design ◽  
Special Focus ◽  
Luminescent Materials ◽  
Design Strategies ◽  
The Relationship ◽  
Triplet Harvesting

Aryl carbonyl-based triplet harvesting luminescent materials are reviewed, with special focus on their molecular design strategies and the relationship among their structures, physical properties and performances.

Structural and Physical Properties of κ and θ-(BEDT-TSeF)2TaF6. Molecular Design Aimed Toward the Two-dimensional Metal

1991 ◽  
Vol 20 (6) ◽  
pp. 1045-1048 ◽  
Author(s):  
Reizo Kato ◽  
Akiko Kobayashi ◽  
Akihito Miyamoto ◽  
Hayao Kobayashi
Keyword(s):  
Physical Properties ◽  
Molecular Design ◽  
Two Dimensional

scholarly journals Photoemission Studies on the Environmental Stability of Thermal Evaporated MAPbI3 Thin Films and MAPbBr3 Single Crystals

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 2005
Author(s):  
Ke Wang ◽  
Benjamin Ecker ◽  
Yongli Gao
Keyword(s):  
Thin Films ◽  
Single Crystals ◽  
Rapid Development ◽  
Environmental Parameters ◽  
Environmental Stability ◽  
Potential Candidate ◽  
Long Term Stability ◽  
The Stability ◽  
Stability Issues

Hybrid organic inorganic perovskites have been considered as a potential candidate for the next generational solar cell due to their outstanding optoelectronic properties and rapid development in recent years. However, the biggest challenge to prevent them from massive commercial use is their long-term stability. Photoemission spectroscopy has been widely used to investigate properties of the perovskites, which provide critical insights to better understand the degradation mechanisms. In this article, we review mainly our photoemission studies on the degradation processes of perovskite thin films and single crystals with different environmental factors, such as gases, water, and light by monitoring changes of chemical composition and electronic structure. These studies on the effects by different environmental parameters are discussed for the understanding of the stability issues and the possible solutions.

Synthesis and photovoltaic properties of two-dimensional benzodithiophene-thiophene copolymers with pendent rational naphtho[1,2-c:5,6-c]bis[1,2,5]thiadiazole side chains

2015 ◽  
Vol 3 (46) ◽  
pp. 23149-23161 ◽  
Author(s):  
Xiaopeng Xu ◽  
Kui Feng ◽  
Kai Li ◽  
Qiang Peng
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Molecular Design ◽  
Polymer Solar Cells ◽  
Side Chains ◽  
Two Dimensional ◽  
Photovoltaic Properties ◽  
Solvent Vapour ◽  
Rational Molecular Design ◽  
Annealing Method

Rational molecular design of the conjugated side chains and the solvent vapour annealing method were employed in this work to develop high performance two-dimensional copolymer donors and their efficient polymer solar cells.

scholarly journals Long-Term Stabilization of Two-Dimensional Perovskites by Encapsulation with Hexagonal Boron Nitride

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1120 ◽  
Author(s):  
Michael Seitz ◽  
Patricia Gant ◽  
Andres Castellanos-Gomez ◽  
Ferry Prins
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Spectroscopic Studies ◽  
Environmental Stability ◽  
Two Dimensional ◽  
Ambient Conditions ◽  
Lead Iodide ◽  
Long Term Stability ◽  
The Stability

Metal halide perovskites are known to suffer from rapid degradation, limiting their direct applicability. Here, the degradation of phenethylammonium lead iodide (PEA2PbI4) two-dimensional perovskites under ambient conditions was studied using fluorescence, absorbance, and fluorescence lifetime measurements. It was demonstrated that the long-term stability of two-dimensional perovskites could be achieved through the encapsulation with hexagonal boron nitride. While un-encapsulated perovskite flakes degraded within hours, the encapsulated perovskites were stable for at least three months. In addition, encapsulation considerably improved the stability under laser irradiation. The environmental stability, combined with the improved durability under illumination, is a critical ingredient for thorough spectroscopic studies of the intrinsic optoelectronic properties of this material platform.

scholarly journals Integrated linker-regulation and ring-fusion engineering for efficient additive-free non-fullerene organic solar cells

2020 ◽  
Vol 8 (36) ◽  
pp. 12516-12526
Author(s):  
Yuli Yin ◽  
Wenxia Zhang ◽  
Zhi Zheng ◽  
Ziyi Ge ◽  
Yi Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Structural Modification ◽  
Molecular Design ◽  
Perylene Diimide ◽  
Two Dimensional ◽  
Ring Fusion ◽  
Rational Molecular Design ◽  
Fusion Engineering

The rational molecular design and structural modification of quasi-two-dimensional fused perylene diimide (quasi-2D FPDI) acceptors have received growing attention for application in non-fullerene organic solar cells (NF-OSCs).

Novel Guest-Host NLO Polyimide Based on Two-Dimensional Carbazole Chromophores

2001 ◽  
Vol 665 ◽  
Author(s):  
Wen-Jang Kuo ◽  
Ging-Ho Hsiue ◽  
Ru-Jong Jeng
Keyword(s):  
Size Effect ◽  
Nonlinear Optical ◽  
Molecular Design ◽  
Temporal Stability ◽  
Second Order ◽  
Optical Characteristics ◽  
Two Dimensional ◽  
Rational Molecular Design ◽  
Extraction Experiment

ABSTRACTTaking advantage of the multifunctional characteristics of carbazole along with rational molecular design, several two-dimensional carbazole chromophores were acquired. Doping the chromophores into poly(ether imide), a series of NLO-active guest-host polymers were obtained. The compatibility between chromophores and poly(ether imide) was investigated by SEM and extraction experiment. After poling, these NLO poly(ether imide)s with large second-order nonlinearities were achieved. Correlation between structure and nonlinear optical characteristics, and the chromophore size effect on the thermal and temporal stability have been probed. Large rotational cone volumes make the two-dimensional chromophores possessing excellent orientational stability at 60.

Cage-Incorporation of Secondary Amine in Ruddlesden-Popper 2D Hybrid Perovskite with Strong Photoconductivity and Polarization Response

2021 ◽  
Author(s):  
beibei wang ◽  
Huaixi Chen ◽  
Wuqian Guo ◽  
Yi Liu ◽  
Shiguo Han ◽  
...  
Keyword(s):  
Physical Properties ◽  
Secondary Amine ◽  
Structural Diversity ◽  
Two Dimensional ◽  
Polarization Response ◽  
Hybrid Perovskite ◽  
2D Hybrid Perovskite

Two-dimensional (2D) Ruddlesden-Popper hybrid perovskites (RPHPs) have shown enormous potentials for photoelectric applications, owing to their advantages of structural diversity and unique physical properties. Despite extensive studies, the cage-incorporation of...

Modelling of Moisture Movement in Wood during Outdoor Storage

2001 ◽  
Vol 6 (2) ◽  
pp. 3-14 ◽  
Author(s):  
R. Baronas ◽  
F. Ivanauskas ◽  
I. Juodeikienė ◽  
A. Kajalavičius
Keyword(s):  
Experimental Data ◽  
Finite Difference ◽  
Climatic Conditions ◽  
Two Dimensional ◽  
Moisture Movement ◽  
Finite Difference Technique ◽  
Long Term Storage ◽  
Space Formulation ◽  
Term Storage

A model of moisture movement in wood is presented in this paper in a two-dimensional-in-space formulation. The finite-difference technique has been used in order to obtain the solution of the problem. The model was applied to predict the moisture content in sawn boards from pine during long term storage under outdoor climatic conditions. The satisfactory agreement between the numerical solution and experimental data was obtained.

Sign in / Sign up

Export Citation Format

Share Document