Photoconductivity in an Epoxy-Based Photocrosslinkable Nonlinear Optical Polymer

1992 ◽  
Vol 247 ◽  
Author(s):  
Lian Li ◽  
R. J. Jeng ◽  
J. Y. Lee ◽  
Y. Yang ◽  
J. Kumar ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Nonlinear Optical ◽  
Carrier Transport ◽  
Polymer System ◽  
Optical Excitation ◽  
Diglycidyl Ether ◽  
Charge Carrier Transport ◽  
Optical Polymer ◽  
Nlo Chromophores ◽  
Nonlinear Optical Polymer

ABSTRACTPhotoconductivity measurements on an epoxy-based photocrosslinkable second-order nonlinear optical (NLO) polymer - DGENC - NAC ( diglycidyl ether of nitrocatechol / nitroaniline prepolymer functionalized with cinnamoyl groups) are presented. Without introducing any sensitizer or charge carrier transport agents, large photoconductivity was obtained in this polymer system. Optical excitation of the NLO chromophores leads to photocarrier generation and it is conjectured that these NLO chromophores also play a role in the carrier transport. This polymer is one of the candidate materials for photorefraction.

scholarly journals Preparation of the Inclusion Complex-Type Nonlinear Optical Polymer

2013 ◽  
Vol 2013 ◽  
pp. 1-7
Author(s):  
Li-Fen Wang ◽  
Jyun-Wun Chen ◽  
Jyun-Wei Chen
Keyword(s):  
Inclusion Complex ◽  
Nonlinear Optical ◽  
Complex Method ◽  
Complex Type ◽  
Photochromic Properties ◽  
Optical Polymer ◽  
Nonlinear Optical Polymers ◽  
Corona Poling ◽  
Nlo Chromophores ◽  
Nonlinear Optical Polymer

This study uses the inclusion complex method to import nonlinear optical (NLO) chromophores, disperse red1 (DR1), and spiropyran (SP), into theγ-CD cavity of theγ-cyclodextrin polymer (γ-CDP) to prepare orderly aligned nonphotocontrollable and photocontrollable nonlinear optical polymers. Calculations support the ultraviolet/visible analyses and suggest the formation of the 1 : 2 DR1/γ-CDP and 1 : 2 SP/γ-CDP inclusion complexes. Upon complexation, the DR1 and SP molecules are free to align themselves along an applied electric field and show high order parameters of approximately 0.48 and 0.20, respectively. Reversible photochromic reactions exhibit that the SP/γ-CDP complex still retains the photochromic properties following corona poling.

Limits of Charge Carrier Transport in Halide Perovskites Revealed by Optical-Pump Terahertz-Probe Spectroscopy

2019 ◽  
Author(s):  
Hannes Hempel ◽  
Andrei Petsiu ◽  
Martin Stolterfoht ◽  
Pascal Becker ◽  
Dieter Neher ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Transport ◽  
Charge Carrier Transport ◽  
Optical Pump ◽  
Halide Perovskites ◽  
Probe Spectroscopy

Photoconductivity in a Photocrosslinkable Second Order Nonlinear Optical Polymer

1992 ◽  
Author(s):  
L. Li ◽  
J. Y. Lee ◽  
Y. Yang ◽  
J. Kumar ◽  
S. K. Tripathy
Keyword(s):  
Nonlinear Optical ◽  
Second Order ◽  
Optical Polymer ◽  
Nonlinear Optical Polymer

scholarly journals Impact of Tortuosity on Charge-Carrier Transport in Organic Bulk Heterojunction Blends

2017 ◽  
Vol 8 (5) ◽  
Author(s):  
Michael C. Heiber ◽  
Klaus Kister ◽  
Andreas Baumann ◽  
Vladimir Dyakonov ◽  
Carsten Deibel ◽  
...  
Keyword(s):  
Charge Carrier ◽  
Carrier Transport ◽  
Bulk Heterojunction ◽  
Charge Carrier Transport

Charge Carrier Transport in Phenazine

1979 ◽  
Vol 53 (3-4) ◽  
pp. 271-280 ◽  
Author(s):  
S. C. Mathur ◽  
B. Kumar ◽  
Keya Roy
Keyword(s):  
Charge Carrier ◽  
Carrier Transport ◽  
Charge Carrier Transport

Electrical Characterization of the Graphene-SiC Heterojunction

2012 ◽  
Vol 717-720 ◽  
pp. 641-644
Author(s):  
Travis J. Anderson ◽  
Karl D. Hobart ◽  
Luke O. Nyakiti ◽  
Virginia D. Wheeler ◽  
Rachael L. Myers-Ward ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Charge Carrier ◽  
Graphene Sheet ◽  
Carrier Transport ◽  
Electrical Characterization ◽  
Epitaxial Graphene ◽  
Charge Carrier Transport ◽  
Semiconductor System ◽  
Significant Research

Graphene, a 2D material, has motivated significant research in the study of its in-plane charge carrier transport in order to understand and exploit its unique physical and electrical properties. The vertical graphene-semiconductor system, however, also presents opportunities for unique devices, yet there have been few attempts to understand the properties of carrier transport through the graphene sheet into an underlying substrate. In this work, we investigate the epitaxial graphene/4H-SiC system, studying both p and n-type SiC substrates with varying doping levels in order to better understand this vertical heterojunction.

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