Development of low bandgap polymers for red and near infrared fullerene-free organic photodetectors

2021 ◽  
Author(s):  
Wonjo Jeong ◽  
Jinhyeon Kang ◽  
Moon-Ki Jeong ◽  
Jong Ho Won ◽  
In Hwan Jung
Keyword(s):  
Conjugated Polymers ◽  
Near Infrared ◽  
Low Bandgap ◽  
Organic Photodetectors

Two photoconductive conjugated polymers (PDTPTT and PCPDTTT) were synthesized to utilize in red and infrared (NIR) organic photodetectors (OPDs). The low bandgap was achieved by stabilizing quinoidal structure of conjugated...

Thiophene/Phenylene/Thiophene-Based Low-Bandgap Conjugated Polymers for Efficient Near-Infrared Photovoltaic Applications

2009 ◽  
Vol 21 (14) ◽  
pp. 3262-3269 ◽  
Author(s):  
Chao-Ying Yu ◽  
Chih-Ping Chen ◽  
Shu-Hua Chan ◽  
Gue-Wuu Hwang ◽  
Ching Ting
Keyword(s):  
Conjugated Polymers ◽  
Near Infrared ◽  
Low Bandgap ◽  
Photovoltaic Applications

Efficient and readily tuneable near-infrared photodetection up to 1500 nm enabled by thiadiazoloquinoxaline-based push–pull type conjugated polymers

2020 ◽  
Vol 8 (29) ◽  
pp. 10098-10103 ◽  
Author(s):  
Frederik Verstraeten ◽  
Sam Gielen ◽  
Pieter Verstappen ◽  
Jorne Raymakers ◽  
Huguette Penxten ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Near Infrared ◽  
Infrared Range ◽  
Infrared Photodetection ◽  
Organic Photodetectors ◽  
Near Infrared Range

Organic photodetectors made from thiadiazoloquinoxaline-based copolymers reach high detectivities in the near-infrared range up to 1400 nm.

scholarly journals α,β-Unsubstituted meso-positioning thienyl BODIPY: a promising electron deficient building block for the development of near infrared (NIR) p-type donor–acceptor (D–A) conjugated polymers

2018 ◽  
Vol 6 (15) ◽  
pp. 4030-4040 ◽  
Author(s):  
Benedetta M. Squeo ◽  
Vasilis G. Gregoriou ◽  
Yang Han ◽  
Alex Palma-Cando ◽  
Sybille Allard ◽  
...  
Keyword(s):  
Conjugated Polymers ◽  
Building Block ◽  
Near Infrared ◽  
Low Bandgap ◽  
Donor Acceptor ◽  
P Type

Development of new ultra low bandgap (Eoptg < 1 eV) π-conjugated D–A polymers consisting of α,β-unsubstituted meso-positioning thienyl BODIPY.

scholarly journals Stacked Dual‐Wavelength Near‐Infrared Organic Photodetectors

2020 ◽  
pp. 2001784
Author(s):  
Yazhong Wang ◽  
Bernhard Siegmund ◽  
Zheng Tang ◽  
Zaifei Ma ◽  
Jonas Kublitski ◽  
...  
Keyword(s):  
Near Infrared ◽  
Dual Wavelength ◽  
Organic Photodetectors

scholarly journals New Approach in the Application of Conjugated Polymers: The Light-Activated Source of Versatile Singlet Oxygen Molecule

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1098
Author(s):  
Agata Blacha-Grzechnik
Keyword(s):  
Conjugated Polymers ◽  
Singlet Oxygen ◽  
Near Infrared ◽  
Photophysical Properties ◽  
Short Review ◽  
The Novel ◽  
New Approach ◽  
Intermolecular Energy ◽  
Intermolecular Energy Transfer ◽  
High Absorption

For many years, the research on conjugated polymers (CPs) has been mainly focused on their application in organic electronics. Recent works, however, show that due to the unique optical and photophysical properties of CPs, such as high absorption in UV–Vis or even near-infrared (NIR) region and efficient intra-/intermolecular energy transfer, which can be relatively easily optimized, CPs can be considered as an effective light-activated source of versatile and highly reactive singlet oxygen for medical or catalytic use. The aim of this short review is to present the novel possibilities that lie dormant in those exceptional polymers with the extended system of π-conjugated bonds.

scholarly journals Enhancing sub-bandgap external quantum efficiency by photomultiplication for narrowband organic near-infrared photodetectors

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jonas Kublitski ◽  
Axel Fischer ◽  
Shen Xing ◽  
Lukasz Baisinger ◽  
Eva Bittrich ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Near Infrared ◽  
Optical Cavity ◽  
Hole Injection ◽  
Visible Range ◽  
Absorption Region ◽  
Electromagnetic Signals ◽  
Organic Photodetectors

AbstractDetection of electromagnetic signals for applications such as health, product quality monitoring or astronomy requires highly responsive and wavelength selective devices. Photomultiplication-type organic photodetectors have been shown to achieve high quantum efficiencies mainly in the visible range. Much less research has been focused on realizing near-infrared narrowband devices. Here, we demonstrate fully vacuum-processed narrow- and broadband photomultiplication-type organic photodetectors. Devices are based on enhanced hole injection leading to a maximum external quantum efficiency of almost 2000% at −10 V for the broadband device. The photomultiplicative effect is also observed in the charge-transfer state absorption region. By making use of an optical cavity device architecture, we enhance the charge-transfer response and demonstrate a wavelength tunable narrowband photomultiplication-type organic photodetector with external quantum efficiencies superior to those of pin-devices. The presented concept can further improve the performance of photodetectors based on the absorption of charge-transfer states, which were so far limited by the low external quantum efficiency provided by these devices.

Near-infrared-emissive π-conjugated polymers based on five-coordinated silicon formazanate complexes

Polymer ◽  
2021 ◽  
pp. 124463
Author(s):  
Shunichiro Ito ◽  
Yoshinori Ito ◽  
Tanaka Kazuo ◽  
Yoshiki Chujo
Keyword(s):  
Conjugated Polymers ◽  
Near Infrared

Photovoltaic properties of novel thiophene- and selenophene-based conjugated low bandgap polymers: a comparative study

2017 ◽  
Vol 41 (14) ◽  
pp. 6315-6321 ◽  
Author(s):  
Young Nam Lee ◽  
Pankaj Attri ◽  
Seong Su Kim ◽  
Sang Jun Lee ◽  
Jun Heon Kim ◽  
...  
Keyword(s):  
Comparative Study ◽  
Conjugated Polymers ◽  
Photovoltaic Properties ◽  
Low Bandgap

We investigated the photovoltaic properties of two newly synthesized low bandgap conjugated polymers, thiophene-based P1 and selenophene-based P2.

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