Substitution degree engineering the crystal packing and optoelectronic properties of benzofuranvinyl-substituted benzene-cored derivatives

2014 ◽  
Vol 2 (29) ◽  
pp. 5954-5962 ◽  
Author(s):  
Jin-Xing Qiu ◽  
Ye-Xin Li ◽  
Xiao-Feng Yang ◽  
Yong Nie ◽  
Zhen-Wei Zhang ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Crystal Packing ◽  
Molecular Shape ◽  
Optoelectronic Properties ◽  
Substitution Degree

The molecular shape exerts remarkable effects on solubility, polymorphism, crystal packing and optoelectronic properties – searching for 3D organic semiconductors.

scholarly journals Long-range exciton diffusion in molecular non-fullerene acceptors

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Yuliar Firdaus ◽  
Vincent M. Le Corre ◽  
Safakath Karuthedath ◽  
Wenlan Liu ◽  
Anastasia Markina ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Diffusion Length ◽  
Crystal Packing ◽  
Maximum Size ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Donor And Acceptor ◽  
Wide Range ◽  
20 Nm ◽  
End Group

Abstract The short exciton diffusion length associated with most classical organic semiconductors used in organic photovoltaics (5-20 nm) imposes severe limits on the maximum size of the donor and acceptor domains within the photoactive layer of the cell. Identifying materials that are able to transport excitons over longer distances can help advancing our understanding and lead to solar cells with higher efficiency. Here, we measure the exciton diffusion length in a wide range of nonfullerene acceptor molecules using two different experimental techniques based on photocurrent and ultrafast spectroscopy measurements. The acceptors exhibit balanced ambipolar charge transport and surprisingly long exciton diffusion lengths in the range of 20 to 47 nm. With the aid of quantum-chemical calculations, we are able to rationalize the exciton dynamics and draw basic chemical design rules, particularly on the importance of the end-group substituent on the crystal packing of nonfullerene acceptors.

scholarly journals Regioisomeric control of layered crystallinity in solution-processable organic semiconductors

2020 ◽  
Vol 11 (46) ◽  
pp. 12493-12505
Author(s):  
Satoru Inoue ◽  
Toshiki Higashino ◽  
Shunto Arai ◽  
Reiji Kumai ◽  
Hiroyuki Matsui ◽  
...  
Keyword(s):  
Single Crystal ◽  
Organic Semiconductors ◽  
High Performance ◽  
Crystal Packing ◽  
Positional Isomers ◽  
Solution Processable

An isomorphous bilayer-type layered herringbone crystal packing is reported for a series of four positional isomers of mono-C8-BTNTs, where the single-crystal devices with the isomers exhibit high-performance TFT characteristics.

scholarly journals Deep Learning for Optoelectronic Properties of Organic Semiconductors

2020 ◽  
Vol 124 (13) ◽  
pp. 7048-7060 ◽  
Author(s):  
Chengqiang Lu ◽  
Qi Liu ◽  
Qiming Sun ◽  
Chang-Yu Hsieh ◽  
Shengyu Zhang ◽  
...  
Keyword(s):  
Deep Learning ◽  
Organic Semiconductors ◽  
Optoelectronic Properties

Recent Advance in 1-D Organic Semiconductors for Waveguide Applications

2019 ◽  
Vol 16 (3) ◽  
pp. 244-252 ◽  
Author(s):  
Rong Zhang ◽  
Xiaobei Jin ◽  
Xuwen Wen ◽  
Qi Chen
Keyword(s):  
Small Molecules ◽  
Organic Semiconductors ◽  
Recent Progress ◽  
Optoelectronic Properties ◽  
Size Reduction ◽  
One Dimensional ◽  
Good System ◽  
Ordered Nanostructures ◽  
Morphology Influence

One dimensional (1-D) micro-/nanostructures provide a good system to investigate the dependence of various properties on dimensionality and size reduction, especially in optoelectronic field. Organic conjugates including small molecules and polymers exhibit good optoelectronic properties and are apt to assemble into ordered nanostructures with well-defined shapes, tunable sizes and defect-free structures. In this review, we focus on recent progress of 1-D organic semiconductors for waveguide applications. Fabrication methods and materials of 1-D organic semiconductors are introduced. The morphology influence on the properties is also summarized.

scholarly journals A novel angularly fused bistetracene: facile synthesis, crystal packing and single-crystal field effect transistors

2017 ◽  
Vol 5 (6) ◽  
pp. 1308-1312 ◽  
Author(s):  
Zunzhi Wang ◽  
Rongjin Li ◽  
Yulan Chen ◽  
Yuan-Zhi Tan ◽  
Zeyi Tu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Crystal Field ◽  
Organic Semiconductors ◽  
Field Effect ◽  
Field Effect Transistors ◽  
Crystal Packing ◽  
Facile Synthesis ◽  
Crystal Field Effect ◽  
Benzene Rings

Simply “migrating” the aromatic sextet of cata-condensed 2D PAH with the same number of fused benzene rings affords novel organic semiconductors with different properties.

Molecular Shape and Crystal Packing: a Study of C12H12 Isomers, Real and Imaginary

2000 ◽  
Vol 83 (9) ◽  
pp. 2317-2335 ◽  
Author(s):  
Jack D. Dunitz ◽  
Giuseppe Filippini ◽  
Angelo Gavezzotti
Keyword(s):  
Crystal Packing ◽  
Molecular Shape

scholarly journals Pasteur's tartaramide/malamide quasiracemates: new entries and departures from near inversion symmetry

CrystEngComm ◽  
2018 ◽  
Vol 20 (30) ◽  
pp. 4213-4220
Author(s):  
Emily N. Pinter ◽  
Lee S. Cantrell ◽  
Graeme M. Day ◽  
Kraig A. Wheeler
Keyword(s):  
Crystal Packing ◽  
Molecular Shape ◽  
Molecular Assembly ◽  
Inversion Symmetry ◽  
Insight Into

Reinvestigating Pasteur's 1853 quasiracemates has led to unexpected departures from centrosymmetric crystal packing and new insight into the role of molecular shape to molecular assembly.

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