Highly air-stable, n-doped conjugated polymers achieved by dimeric organometallic dopants

2021 ◽  
Author(s):  
Yu Yamashita ◽  
Samik Jhulki ◽  
Dinesh Bhardwaj ◽  
Elena Longhi ◽  
Shohei Kumagai ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Work Function ◽  
Electronic Properties ◽  
Chemical Doping ◽  
Doped Polymers ◽  
Molecular Semiconductors

Chemical doping is a key process for controlling the electronic properties of molecular semiconductors, including their conductivity and work function. A common limitation of n-doped polymers is their instability under...

scholarly journals Architectures and Applications of BODIPY-Based Conjugated Polymers

Polymers ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 75
Author(s):  
Yiqi Fan ◽  
Jinjin Zhang ◽  
Zhouyi Hong ◽  
Huayu Qiu ◽  
Yang Li ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Chemical Doping ◽  
Structure Property ◽  
High Quantum Yield ◽  
Conjugated Materials ◽  
Energy Band Gap ◽  
Photoelectric Properties ◽  
Structure Property Relationship ◽  
Insight Into ◽  
High Absorption

Conjugated polymers generally contain conjugated backbone structures with benzene, heterocycle, double bond, or triple bond, so that they have properties similar to semiconductors and even conductors. Their energy band gap is very small and can be adjusted via chemical doping, allowing for excellent photoelectric properties. To obtain prominent conjugated materials, numerous well-designed polymer backbones have been reported, such as polyphenylenevinylene, polyphenylene acetylene, polycarbazole, and polyfluorene. 4,4′-Difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY)-based conjugated polymers have also been prepared owing to its conjugated structure and intriguing optical properties, including high absorption coefficients, excellent thermal/photochemical stability, and high quantum yield. Most importantly, the properties of BODIPYs can be easily tuned by chemical modification on the dipyrromethene core, which endows the conjugated polymers with multiple functionalities. In this paper, BODIPY-based conjugated polymers are reviewed, focusing on their structures and applications. The forms of BODIPY-based conjugated polymers include linear, coiled, and porous structures, and their structure–property relationship is explored. Also, typical applications in optoelectronic materials, sensors, gas/energy storage, biotherapy, and bioimaging are presented and discussed in detail. Finally, the review provides an insight into the challenges in the development of BODIPY-based conjugated polymers.

Nanoscale magnetism and novel electronic properties of a bilayer bismuth(111) film with vacancies and chemical doping

2016 ◽  
Vol 18 (30) ◽  
pp. 20550-20561 ◽  
Author(s):  
M. P. K. Sahoo ◽  
Yajun Zhang ◽  
Jie Wang
Keyword(s):  
Transition Metal ◽  
Electronic Properties ◽  
Chemical Doping ◽  
Metal Impurities ◽  
Transition Metal Impurities

A single Bi(111) bilayer with defects and transition metal impurities.

scholarly journals Post-Annealing Effect on Optical and Electronic Properties of Thermally Evaporated MoOX Thin Films as Hole-Selective Contacts for p-Si Solar Cells

2021 ◽  
Author(s):  
Yuanwei Jiang ◽  
Shuangying Cao ◽  
Linfeng Lu ◽  
Guanlin Du ◽  
Yinyue Lin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Work Function ◽  
Electronic Properties ◽  
Crystalline Silicon ◽  
Annealing Treatment ◽  
Crystalline Silicon Solar Cells ◽  
Post Annealing ◽  
Si Solar Cells ◽  
Optical And Electronic Properties ◽  
Large Work

Abstract Owing to its large work function, MoOX has been widely used for hole-selective contact in both thin film and crystalline silicon solar cells. In this work, thermally evaporated MoOX films are employed on the rear sides of p-type crystalline silicon (p-Si) solar cells, where the optical and electronic properties of the MoOX films as well as the corresponding device performances are investigated as a function of post-annealing treatment. The MoOX film annealed at 100oC shows the highest work function and proves the best hole selectivity based on the results of energy band simulation and contact resistivity measurements. The full rear p-Si/MoOX/Ag contacted solar cells demonstrate the best performance with an efficiency of 19.19%, which is the result of the combined influence of MoOX’s hole selectivity and passivation ability.

Nearly 100% Photocrosslinking Efficiency in Ultrahigh Work Function Hole-Doped Conjugated Polymers Using Bis(fluorophenyl azide) Additives

2019 ◽  
Vol 11 (51) ◽  
pp. 48103-48112
Author(s):  
Desmond W. Y. Teo ◽  
Zaini Jamal ◽  
Hao-Yu Phua ◽  
Cindy G. Tang ◽  
Rui-Qi Png ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Work Function
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