The lower rather than higher density charge carrier determines the NH3-sensing nature and sensitivity of ambipolar organic semiconductors

2018 ◽  
Vol 2 (5) ◽  
pp. 1009-1016 ◽  
Author(s):  
Yanli Chen ◽  
Xia Kong ◽  
Guifen Lu ◽  
Dongdong Qi ◽  
Yanling Wu ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors

NH3 sensing behavior from ambiplolar bisphthalocyanines manifests the lower density carrier (hole vs. electron) with faster charge transporting speed in semiconducting layer in determining the sensing response nature.

Nanoscale Imaging of Charge Carrier and Exciton Trapping at Structural Defects in Organic Semiconductors

Nano Letters ◽  
2016 ◽  
Vol 16 (3) ◽  
pp. 2084-2089 ◽  
Author(s):  
Christoph Große ◽  
Olle Gunnarsson ◽  
Pablo Merino ◽  
Klaus Kuhnke ◽  
Klaus Kern
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors ◽  
Structural Defects ◽  
Nanoscale Imaging

Towards direct enzyme wiring: a theoretical investigation of charge carrier transfer mechanisms between glucose oxidase and organic semiconductors

2019 ◽  
Vol 21 (6) ◽  
pp. 2968-2976 ◽  
Author(s):  
Gintautas Bagdžiūnas ◽  
Arūnas Ramanavičius
Keyword(s):  
Charge Transfer ◽  
Charge Carrier ◽  
Glucose Oxidase ◽  
Organic Semiconductors ◽  
Theoretical Investigation ◽  
Glucose Biosensors ◽  
Carrier Transfer ◽  
Amperometric Glucose Biosensors ◽  
Transfer Mechanisms

We have evaluated charge transfer between enzyme glucose oxidase (GOx) and organic semiconductors, both of which were applied in the design of amperometric glucose biosensors.

scholarly journals Charge carrier relaxation model in disordered organic semiconductors

AIP Advances ◽  
2013 ◽  
Vol 3 (11) ◽  
pp. 112119 ◽  
Author(s):  
Nianduan Lu ◽  
Ling Li ◽  
Pengxiao sun ◽  
Ming Liu
Keyword(s):  
Charge Carrier ◽  
Organic Semiconductors ◽  
Relaxation Model ◽  
Carrier Relaxation

scholarly journals Covalent organic frameworks with high quantum efficiency in photocatalytic hydrogen evolution: mediating charge separation

2021 ◽  
Author(s):  
Chunzhi Li ◽  
Jiali Liu ◽  
He Li ◽  
Kaifeng Wu ◽  
Junhui Wang ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Quantum Efficiency ◽  
Organic Semiconductors ◽  
Transient Absorption ◽  
Active Species ◽  
Binding Energies ◽  
Transient Absorption Spectroscopy ◽  
High Quantum Efficiency ◽  
Inorganic Semiconductors ◽  
Femtosecond Transient Absorption

Abstract Compared with inorganic semiconductors, the difficulty of exciton dissociation is one of the main reasons for the lower photocatalytic activity of organic semiconductors. In this work, we report that the charge carrier lifetime is dramatically prolonged by incorporating a suitable donor-acceptor (β-ketene-CN) pair to a covalent organic framework nanosheet (CN-CON). CN-CON showed remarkably high apparent quantum efficiency up to 82.6% at 450 nm in photocatalytic H2 evolution, superior to all the COFs reported so far. The charge carrier kinetic analysis and femtosecond transient absorption spectroscopy characterizations verified that CN-CON had intrinsically lower exciton binding energies and hence longer-lived charge carriers than the corresponding CON without CN unit. This work provides an excellent model for gaining insight into the nature of ultrashort-lived active species in polymeric organic photocatalysts.

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