Photoconductivity and electronic processes in PCDTBT polymer composite with embedded CdSe nanoplatelets

Shamil R. Saitov; Dmitriy V. Amasev; Alexey E. Aleksandrov; Andrey G. Kazanskii; Bedil M. Saidzhonov; Aleksandr E. Melnikov; Guihang Zhang; Alexey R. Tameev; Roman B. Vasiliev; Aleksandr M. Smirnov; Vladimir N. Mantsevich

doi:10.1016/j.orgel.2022.106693

Photoconductivity and electronic processes in PCDTBT polymer composite with embedded CdSe nanoplatelets

Shamil R. Saitov, Dmitriy V. Amasev, Alexey E. Aleksandrov, Andrey G. Kazanskii, Bedil M. Saidzhonov, Aleksandr E. Melnikov, Guihang Zhang, Alexey R. Tameev, Roman B. Vasiliev, Aleksandr M. Smirnov, Vladimir N. Mantsevich

Research output: Contribution to journal › Article › peer-review

Abstract

The photoconductivity in thin films of a new composite based on CdSe nanoplatelets (NPLs) and PCDTBT polymer has been studied using photoconductivity temperature dependences, current-voltage and lux-ampere measurements at various temperatures and applied bias. The incorporation of 7 vol% of NPLs into the polymer blend led to an increase in photoconductivity by an order of magnitude compared to the pristine PCDTBT film in the temperature range of 310–360 K and the electric field strength above 200 V cm⁻¹. An analysis of current-voltage characteristics measured at various temperatures demonstrated that the observed increase in the photoconductivity of the composite is due to a change in the transport mechanism of nonequilibrium charge carriers with an increase in their concentration. The observed saturation of photoconductivity with increasing temperature is supposed to occur due to the increase in exciton diffusion length with temperature increasing and limited effective exciton generation area.

Original language	English
Article number	106693
Journal	Organic Electronics
Volume	112
DOIs	https://doi.org/10.1016/j.orgel.2022.106693
Publication status	Published - 1 Jan 2023
Externally published	Yes

Keywords

CdSe nanoplatelets
Hybrid composite
Photoconductive polymer
Photoconductivity

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10.1016/j.orgel.2022.106693

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Saitov, S. R., Amasev, D. V., Aleksandrov, A. E., Kazanskii, A. G., Saidzhonov, B. M., Melnikov, A. E., Zhang, G., Tameev, A. R., Vasiliev, R. B., Smirnov, A. M., & Mantsevich, V. N. (2023). Photoconductivity and electronic processes in PCDTBT polymer composite with embedded CdSe nanoplatelets. Organic Electronics, 112, Article 106693. https://doi.org/10.1016/j.orgel.2022.106693

@article{1a5c5db1d931474ab6a77deee93f9a1c,

title = "Photoconductivity and electronic processes in PCDTBT polymer composite with embedded CdSe nanoplatelets",

abstract = "The photoconductivity in thin films of a new composite based on CdSe nanoplatelets (NPLs) and PCDTBT polymer has been studied using photoconductivity temperature dependences, current-voltage and lux-ampere measurements at various temperatures and applied bias. The incorporation of 7 vol\% of NPLs into the polymer blend led to an increase in photoconductivity by an order of magnitude compared to the pristine PCDTBT film in the temperature range of 310–360 K and the electric field strength above 200 V cm−1. An analysis of current-voltage characteristics measured at various temperatures demonstrated that the observed increase in the photoconductivity of the composite is due to a change in the transport mechanism of nonequilibrium charge carriers with an increase in their concentration. The observed saturation of photoconductivity with increasing temperature is supposed to occur due to the increase in exciton diffusion length with temperature increasing and limited effective exciton generation area.",

keywords = "CdSe nanoplatelets, Hybrid composite, Photoconductive polymer, Photoconductivity",

author = "Saitov, \{Shamil R.\} and Amasev, \{Dmitriy V.\} and Aleksandrov, \{Alexey E.\} and Kazanskii, \{Andrey G.\} and Saidzhonov, \{Bedil M.\} and Melnikov, \{Aleksandr E.\} and Guihang Zhang and Tameev, \{Alexey R.\} and Vasiliev, \{Roman B.\} and Smirnov, \{Aleksandr M.\} and Mantsevich, \{Vladimir N.\}",

note = "Publisher Copyright: {\textcopyright} Elsevier B.V.",

year = "2023",

month = jan,

day = "1",

doi = "10.1016/j.orgel.2022.106693",

language = "English",

volume = "112",

journal = "Organic Electronics",

issn = "1566-1199",

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T1 - Photoconductivity and electronic processes in PCDTBT polymer composite with embedded CdSe nanoplatelets

AU - Saitov, Shamil R.

AU - Amasev, Dmitriy V.

AU - Aleksandrov, Alexey E.

AU - Kazanskii, Andrey G.

AU - Saidzhonov, Bedil M.

AU - Melnikov, Aleksandr E.

AU - Zhang, Guihang

AU - Tameev, Alexey R.

AU - Vasiliev, Roman B.

AU - Smirnov, Aleksandr M.

AU - Mantsevich, Vladimir N.

PY - 2023/1/1

Y1 - 2023/1/1

N2 - The photoconductivity in thin films of a new composite based on CdSe nanoplatelets (NPLs) and PCDTBT polymer has been studied using photoconductivity temperature dependences, current-voltage and lux-ampere measurements at various temperatures and applied bias. The incorporation of 7 vol% of NPLs into the polymer blend led to an increase in photoconductivity by an order of magnitude compared to the pristine PCDTBT film in the temperature range of 310–360 K and the electric field strength above 200 V cm−1. An analysis of current-voltage characteristics measured at various temperatures demonstrated that the observed increase in the photoconductivity of the composite is due to a change in the transport mechanism of nonequilibrium charge carriers with an increase in their concentration. The observed saturation of photoconductivity with increasing temperature is supposed to occur due to the increase in exciton diffusion length with temperature increasing and limited effective exciton generation area.

AB - The photoconductivity in thin films of a new composite based on CdSe nanoplatelets (NPLs) and PCDTBT polymer has been studied using photoconductivity temperature dependences, current-voltage and lux-ampere measurements at various temperatures and applied bias. The incorporation of 7 vol% of NPLs into the polymer blend led to an increase in photoconductivity by an order of magnitude compared to the pristine PCDTBT film in the temperature range of 310–360 K and the electric field strength above 200 V cm−1. An analysis of current-voltage characteristics measured at various temperatures demonstrated that the observed increase in the photoconductivity of the composite is due to a change in the transport mechanism of nonequilibrium charge carriers with an increase in their concentration. The observed saturation of photoconductivity with increasing temperature is supposed to occur due to the increase in exciton diffusion length with temperature increasing and limited effective exciton generation area.

KW - CdSe nanoplatelets

KW - Hybrid composite

KW - Photoconductive polymer

KW - Photoconductivity

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DO - 10.1016/j.orgel.2022.106693

M3 - Article

AN - SCOPUS:85142745205

SN - 1566-1199

VL - 112

JO - Organic Electronics

JF - Organic Electronics

M1 - 106693

ER -

Photoconductivity and electronic processes in PCDTBT polymer composite with embedded CdSe nanoplatelets

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