Time-Dependent charge carrier transport with hall effect in organic semiconductors for Langevin and Non-Langevin systems

Seema Morab; Manickam Minakshi Sundaram; Almantas Pivrikas

doi:10.3390/nano12244414

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Time-Dependent charge carrier transport with hall effect in organic semiconductors for Langevin and Non-Langevin systems

Journal article

Open access

Peer reviewed

Time-Dependent charge carrier transport with hall effect in organic semiconductors for Langevin and Non-Langevin systems

Seema Morab, Manickam Minakshi Sundaram and Almantas Pivrikas

Nanomaterials (Basel, Switzerland), Vol.12(24), Art. 4414

2022

DOI: https://doi.org/10.3390/nano12244414

PMID: 36558267

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Abstract

Chemistry

Chemistry, Multidisciplinary

Materials Science

Materials Science, Multidisciplinary

Nanoscience & Nanotechnology

Physical Sciences

Physics

Physics, Applied

Science & Technology

Science & Technology - Other Topics

Technology

The time-dependent charge carrier transport and recombination processes in low-mobility organic semiconductor diodes are obtained through numerical simulations using the finite element method (FEM). The application of a Lorentz force across the diode alters the charge transport process leading to the Hall effect. In this contribution, the Hall effect parameters, such as the Hall voltage and charge carrier concentration with varying magnetic fields, are computed for both Langevin and non-Langevin type recombination processes. The results indicate the charge carrier concentration within the diode for the Langevin system is about seven and fourteen times less while the maximum amount of extracted charge is nearly five and ten times less than that in the non-Langevin system of 0.01 and 0.001, respectively. The Hall voltage values obtained for the steady-state case are similar to the non-Langevin system of beta/beta(L) = 0.01. However, the values obtained for the Langevin and non-Langevin systems of beta/beta(L) = 1 and 0.001 exhibit anomalies. The implications of these findings advance the understanding of the charge transport and Hall effect measurements in organic semiconductors that underpins the device's performance.

Details

Title: Time-Dependent charge carrier transport with hall effect in organic semiconductors for Langevin and Non-Langevin systems
Authors/Creators: Seema Morab - Murdoch University
Manickam Minakshi Sundaram - Murdoch Univ, Coll Sci Hlth Engn & Educ, Perth, WA 6150, Australia
Almantas Pivrikas - Murdoch Univ, Coll Sci Hlth Engn & Educ, Perth, WA 6150, Australia
Publication Details: Nanomaterials (Basel, Switzerland), Vol.12(24), Art. 4414
Publisher: MDPI
Number of pages: 11
Grant note: Australian Government-RTP Scholarship
Identifiers: 991005564669507891
Murdoch Affiliation: Centre for Water, Energy and Waste
Language: English
Resource Type: Journal article

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Citation topics: 2 Chemistry; 2.114 Organic Semiconductors; 2.114.61 Organic Solar Cells
Web Of Science research areas: Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Nanoscience & Nanotechnology; Physics, Applied
ESI research areas: Materials Science