Construction of a 9,9′-bifluorenylidene-based small molecule acceptor materials by screening conformation, steric configuration and repeating unit number: a theoretical design and characterization

2017 ◽  
Vol 5 (39) ◽  
pp. 10343-10352 ◽  
Author(s):  
Ming-Yue Sui ◽  
Yun Geng ◽  
Guang-Yan Sun ◽  
Jian-Ping Wang
Keyword(s):  
Small Molecule ◽  
High Performance ◽  
Molecular Level ◽  
Photovoltaic Properties ◽  
Molecular Conformations ◽  
Repeat Units ◽  
Theoretical Design ◽  
Steric Configuration

The effects of molecular conformations, steric configurations and repeat units on the 99BF-based on photovoltaic properties were designed and compared at the molecular level. As a result, thep-conformational linear of the 4-unit molecule may be a high-performance 99′BF derivative.

Toward high performance indacenodithiophene-based small-molecule organic solar cells: investigation of the effect of fused aromatic bridges on the device performance

2016 ◽  
Vol 4 (6) ◽  
pp. 2252-2262 ◽  
Author(s):  
Jin-Liang Wang ◽  
Fei Xiao ◽  
Jun Yan ◽  
Kai-Kai Liu ◽  
Zheng-Feng Chang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Device Performance ◽  
Photovoltaic Properties

Here we report the synthesis of a pair of D1–A-bridge–D2-bridge–A–D1 type small molecules, which have different π-conjugated bridges and investigated the effects on their photovoltaic properties.

Theoretical design and characterization of pyridalthiadiazole-based chromophores with fast charge transfer at donor/acceptor interface toward small molecule organic photovoltaics

RSC Advances ◽  
2015 ◽  
Vol 5 (37) ◽  
pp. 29401-29411 ◽  
Author(s):  
Shuang-Bao Li ◽  
Yu-Ai Duan ◽  
Yun Geng ◽  
Hong-Ze Gao ◽  
Yong-Qing Qiu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Charge Transport ◽  
Small Molecule ◽  
Organic Photovoltaics ◽  
Effective Charge ◽  
High Performance ◽  
Fast Charge ◽  
Theoretical Design ◽  
Donor Acceptor

The designed 2, 3, and 5 will be promising donor candidates for high-performance OPV device due to their fast intermolecular charge transfer and effective charge transport.

Morphology of High-Performance Rigid-Rod Polymer Fibers and Molecular Composites

1989 ◽  
Vol 47 ◽  
pp. 338-339
Author(s):  
W.W. Adams ◽  
S. J. Krause
Keyword(s):  
Tensile Strength ◽  
High Performance ◽  
Liquid Crystalline ◽  
Molecular Level ◽  
Synergistic Effects ◽  
Tensile Modulus ◽  
Commercial Development ◽  
The Matrix ◽  
Molecular Composites ◽  
Rigid Rod

Rigid-rod polymers such as PBO, poly(paraphenylene benzobisoxazole), Figure 1a, are now in commercial development for use as high-performance fibers and for reinforcement at the molecular level in molecular composites. Spinning of liquid crystalline polyphosphoric acid solutions of PBO, followed by washing, drying, and tension heat treatment produces fibers which have the following properties: density of 1.59 g/cm3; tensile strength of 820 kpsi; tensile modulus of 52 Mpsi; compressive strength of 50 kpsi; they are electrically insulating; they do not absorb moisture; and they are insensitive to radiation, including ultraviolet. Since the chain modulus of PBO is estimated to be 730 GPa, the high stiffness also affords the opportunity to reinforce a flexible coil polymer at the molecular level, in analogy to a chopped fiber reinforced composite. The objectives of the molecular composite concept are to eliminate the thermal expansion coefficient mismatch between the fiber and the matrix, as occurs in conventional composites, to eliminate the interface between the fiber and the matrix, and, hopefully, to obtain synergistic effects from the exceptional stiffness of the rigid-rod molecule. These expectations have been confirmed in the case of blending rigid-rod PBZT, poly(paraphenylene benzobisthiazole), Figure 1b, with stiff-chain ABPBI, poly 2,5(6) benzimidazole, Fig. 1c A film with 30% PBZT/70% ABPBI had tensile strength 190 kpsi and tensile modulus of 13 Mpsi when solution spun from a 3% methane sulfonic acid solution into a film. The modulus, as predicted by rule of mixtures, for a film with this composition and with planar isotropic orientation, should be 16 Mpsi. The experimental value is 80% of the theoretical value indicating that the concept of a molecular composite is valid.

Fullerene/Non-fullerene Alloy for High-Performance All-Small-Molecule Organic Solar Cells

2021 ◽  
Vol 13 (5) ◽  
pp. 6461-6469
Author(s):  
María Privado ◽  
Fernando G. Guijarro ◽  
Pilar de la Cruz ◽  
Rahul Singhal ◽  
Fernando Langa ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance

Stiffening the Pb-X Framework through a π-Conjugated Small-Molecule Cross-Linker for High-Performance Inorganic CsPbI2Br Perovskite Solar Cells

2021 ◽  
Author(s):  
Hui Li ◽  
Xiaotao Hao ◽  
Bohong Chang ◽  
Zihao Li ◽  
Lian Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Cross Linker

Star-shaped cyclopentadithiophene-based dopant-free hole-transporting material for high-performance perovskite solar cells

2021 ◽  
Author(s):  
Kun-Mu Lee ◽  
Jui-Yu Yang ◽  
Ping-Sheng Lai ◽  
Ke-Jyun Luo ◽  
Ting Yu Yang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Free Hole ◽  
Hole Transporting ◽  
Hole Transporting Material

A new cyclopentadithiophene (CPDT)-based organic small molecule serves as an efficient dopant-free hole transporting material (HTM) for perovskite solar cells (PSCs). Upon incorporation of two carbazole groups, the resulting CPDT-based...

Importance of Terminal Group Pairing of Polymer Donor and Small‐Molecule Acceptor in Optimizing Blend Morphology and Voltage Loss of High‐Performance Solar Cells

2021 ◽  
pp. 2100870
Author(s):  
Geon‐U Kim ◽  
Cheng Sun ◽  
Jin Su Park ◽  
Hyun Gyeong Lee ◽  
Dongchan Lee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
High Performance ◽  
Terminal Group ◽  
Blend Morphology ◽  
Voltage Loss

scholarly journals Corrigendum to: “Molecular-level heterostructures assembled from layered black phosphorene and Ti3C2 MXene as superior anodes for high-performance sodium ion batteries” [Nano Energy 65 (2019) 104037]

Nano Energy ◽  
2021 ◽  
Vol 84 ◽  
pp. 105916
Author(s):  
Ruizheng Zhao ◽  
Zhao Qian ◽  
Zhongyuan Liu ◽  
Danyang Zhao ◽  
Xiaobin Hui ◽  
...  
Keyword(s):  
High Performance ◽  
Molecular Level ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Black Phosphorene

Modulating Crystallinity and Miscibility via Side‐chain Variation Enable High Performance All‐Small‐Molecule Organic Solar Cells

2021 ◽  
Author(s):  
Yang Wang ◽  
Qunping Fan ◽  
Yulong Wang ◽  
Jin Fang ◽  
Qi Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecule ◽  
Organic Solar Cells ◽  
High Performance ◽  
Side Chain

Small molecule organic light-emitting diodes can exhibit high performance without conventional hole transport layers

2002 ◽  
Vol 81 (19) ◽  
pp. 3528-3530 ◽  
Author(s):  
Qinglan Huang ◽  
Ji Cui ◽  
He Yan ◽  
Jonathan G. C. Veinot ◽  
Tobin J. Marks
Keyword(s):  
Small Molecule ◽  
High Performance ◽  
Light Emitting Diodes ◽  
Hole Transport ◽  
Organic Light Emitting Diodes ◽  
Light Emitting ◽  
Organic Light ◽  
Hole Transport Layers
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