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A Shockley-Type Polymer: Fullerene Solar Cell

Ardalan Armin Orcid Logo, Zhiming Chen, Yaocheng Jin, Kai Zhang, Fei Huang, Safa Shoaee

Advanced Energy Materials, Volume: 8, Issue: 7, Start page: 1701450

Swansea University Author: Ardalan Armin Orcid Logo

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DOI (Published version): 10.1002/aenm.201701450

Abstract

Charge extraction rate in solar cells made of blends of electron donating/accepting organic semiconductors is typically slow due to their low charge carrier mobility. This sets a limit on the active layer thickness and has hindered the industrialization of organic solar cells (OSCs). Herein, charge...

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Published in: Advanced Energy Materials
ISSN: 1614-6832
Published: Wiley 2018
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URI: https://cronfa.swan.ac.uk/Record/cronfa38452
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first_indexed 2018-02-08T20:25:34Z
last_indexed 2020-07-27T18:58:22Z
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spelling 2020-07-27T16:50:38.0009352 v2 38452 2018-02-08 A Shockley-Type Polymer: Fullerene Solar Cell 22b270622d739d81e131bec7a819e2fd 0000-0002-6129-5354 Ardalan Armin Ardalan Armin true false 2018-02-08 SPH Charge extraction rate in solar cells made of blends of electron donating/accepting organic semiconductors is typically slow due to their low charge carrier mobility. This sets a limit on the active layer thickness and has hindered the industrialization of organic solar cells (OSCs). Herein, charge transport and recombination properties of an efficient polymer (NT812):fullerene blend are investigated. This system delivers power conversion efficiency of &#62;9% even when the junction thickness is as large as 800 nm. Experimental results indicate that this material system exhibits exceptionally low bimolecular recombination constant, 800 times smaller than the diffusion-controlled electron and hole encounter rate. Comparing theoretical results based on a recently introduced modified Shockley model for fill factor, and experiments, clarifies that charge collection is nearly ideal in these solar cells even when the thickness is several hundreds of nanometer. This is the first realization of high-efficiency Shockley-type organic solar cells with junction thicknesses suitable for scaling up. Journal Article Advanced Energy Materials 8 7 1701450 Wiley 1614-6832 Organic solar cells, reduced recombination, charge carrier mobility, organic semiconductors 5 3 2018 2018-03-05 10.1002/aenm.201701450 COLLEGE NANME Physics COLLEGE CODE SPH Swansea University 2020-07-27T16:50:38.0009352 2018-02-08T14:28:23.5273889 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Physics Ardalan Armin 0000-0002-6129-5354 1 Zhiming Chen 2 Yaocheng Jin 3 Kai Zhang 4 Fei Huang 5 Safa Shoaee 6
title A Shockley-Type Polymer: Fullerene Solar Cell
spellingShingle A Shockley-Type Polymer: Fullerene Solar Cell
Ardalan Armin
title_short A Shockley-Type Polymer: Fullerene Solar Cell
title_full A Shockley-Type Polymer: Fullerene Solar Cell
title_fullStr A Shockley-Type Polymer: Fullerene Solar Cell
title_full_unstemmed A Shockley-Type Polymer: Fullerene Solar Cell
title_sort A Shockley-Type Polymer: Fullerene Solar Cell
author_id_str_mv 22b270622d739d81e131bec7a819e2fd
author_id_fullname_str_mv 22b270622d739d81e131bec7a819e2fd_***_Ardalan Armin
author Ardalan Armin
author2 Ardalan Armin
Zhiming Chen
Yaocheng Jin
Kai Zhang
Fei Huang
Safa Shoaee
format Journal article
container_title Advanced Energy Materials
container_volume 8
container_issue 7
container_start_page 1701450
publishDate 2018
institution Swansea University
issn 1614-6832
doi_str_mv 10.1002/aenm.201701450
publisher Wiley
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Physics{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Physics
document_store_str 0
active_str 0
description Charge extraction rate in solar cells made of blends of electron donating/accepting organic semiconductors is typically slow due to their low charge carrier mobility. This sets a limit on the active layer thickness and has hindered the industrialization of organic solar cells (OSCs). Herein, charge transport and recombination properties of an efficient polymer (NT812):fullerene blend are investigated. This system delivers power conversion efficiency of &#62;9% even when the junction thickness is as large as 800 nm. Experimental results indicate that this material system exhibits exceptionally low bimolecular recombination constant, 800 times smaller than the diffusion-controlled electron and hole encounter rate. Comparing theoretical results based on a recently introduced modified Shockley model for fill factor, and experiments, clarifies that charge collection is nearly ideal in these solar cells even when the thickness is several hundreds of nanometer. This is the first realization of high-efficiency Shockley-type organic solar cells with junction thicknesses suitable for scaling up.
published_date 2018-03-05T03:48:37Z
_version_ 1763752351179472896
score 11.016235

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