Spectral (in)dependence of nonequilibrium charge carriers lifetime and density of states distribution in the vicinity of the band gap edge in F8BT polymer

Shamil R. Saitov; Daniil N. Litvinenko; Alexey E. Aleksandrov; Oleg V. Snigirev; Alexey R. Tameev; Alexander M. Smirnov; Vladimir N. Mantsevich

doi:10.1063/5.0156576

Spectral (in)dependence of nonequilibrium charge carriers lifetime and density of states distribution in the vicinity of the band gap edge in F8BT polymer

Shamil R. Saitov, Daniil N. Litvinenko, Alexey E. Aleksandrov, Oleg V. Snigirev, Alexey R. Tameev, Alexander M. Smirnov, Vladimir N. Mantsevich

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

Abstract

Photoelectric properties of the F8BT polymer are investigated by the Constant photocurrent method (CPM) based on the photocurrent spectra Δj_ph(hν) and absorption spectra α_CPM(hν). The negligibly weak dependence of charge carriers lifetime on the photon energy is found for hν = 2.2-2.7 eV. The peculiarities of the absorption spectra and the photoconductivity spectra are revealed to be determined mainly by the Gaussian distribution of the density of states (DOS). The density of trap states in the F8BT polymer thin films in the exponential DOS is estimated to be 10³ times higher than in the Gaussian DOS.

Original language	English
Article number	191108
Journal	Applied Physics Letters
Volume	123
Issue number	19
DOIs	https://doi.org/10.1063/5.0156576
Publication status	Published - 6 Nov 2023
Externally published	Yes

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title = "Spectral (in)dependence of nonequilibrium charge carriers lifetime and density of states distribution in the vicinity of the band gap edge in F8BT polymer",

abstract = "Photoelectric properties of the F8BT polymer are investigated by the Constant photocurrent method (CPM) based on the photocurrent spectra Δjph(hν) and absorption spectra αCPM(hν). The negligibly weak dependence of charge carriers lifetime on the photon energy is found for hν = 2.2-2.7 eV. The peculiarities of the absorption spectra and the photoconductivity spectra are revealed to be determined mainly by the Gaussian distribution of the density of states (DOS). The density of trap states in the F8BT polymer thin films in the exponential DOS is estimated to be 103 times higher than in the Gaussian DOS.",

author = "Saitov, \{Shamil R.\} and Litvinenko, \{Daniil N.\} and Aleksandrov, \{Alexey E.\} and Snigirev, \{Oleg V.\} and Tameev, \{Alexey R.\} and Smirnov, \{Alexander M.\} and Mantsevich, \{Vladimir N.\}",

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year = "2023",

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doi = "10.1063/5.0156576",

language = "English",

volume = "123",

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TY - JOUR

T1 - Spectral (in)dependence of nonequilibrium charge carriers lifetime and density of states distribution in the vicinity of the band gap edge in F8BT polymer

AU - Saitov, Shamil R.

AU - Litvinenko, Daniil N.

AU - Aleksandrov, Alexey E.

AU - Snigirev, Oleg V.

AU - Tameev, Alexey R.

AU - Smirnov, Alexander M.

AU - Mantsevich, Vladimir N.

PY - 2023/11/6

Y1 - 2023/11/6

N2 - Photoelectric properties of the F8BT polymer are investigated by the Constant photocurrent method (CPM) based on the photocurrent spectra Δjph(hν) and absorption spectra αCPM(hν). The negligibly weak dependence of charge carriers lifetime on the photon energy is found for hν = 2.2-2.7 eV. The peculiarities of the absorption spectra and the photoconductivity spectra are revealed to be determined mainly by the Gaussian distribution of the density of states (DOS). The density of trap states in the F8BT polymer thin films in the exponential DOS is estimated to be 103 times higher than in the Gaussian DOS.

AB - Photoelectric properties of the F8BT polymer are investigated by the Constant photocurrent method (CPM) based on the photocurrent spectra Δjph(hν) and absorption spectra αCPM(hν). The negligibly weak dependence of charge carriers lifetime on the photon energy is found for hν = 2.2-2.7 eV. The peculiarities of the absorption spectra and the photoconductivity spectra are revealed to be determined mainly by the Gaussian distribution of the density of states (DOS). The density of trap states in the F8BT polymer thin films in the exponential DOS is estimated to be 103 times higher than in the Gaussian DOS.

UR - https://www.scopus.com/pages/publications/85176323441

U2 - 10.1063/5.0156576

DO - 10.1063/5.0156576

M3 - Article

AN - SCOPUS:85176323441

SN - 0003-6951

VL - 123

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 191108

ER -

Spectral (in)dependence of nonequilibrium charge carriers lifetime and density of states distribution in the vicinity of the band gap edge in F8BT polymer

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