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DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS / RAHUL PATIDAR

Swansea University Author: RAHUL PATIDAR

DOI (Published version): 10.23889/SUthesis.63628

Abstract

Perovskite solar cells (PSCs) have gained a lot of attention in recent years because of their outstanding optoelectronic properties and ability to tolerate defects. Additionally, they can be produced at high throughput using solution processing techniques. It is this feature of perovskite that is le...

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Published: Swansea, Wales, UK 2023
Institution: Swansea University
Degree level: Doctoral
Degree name: Ph.D
Supervisor: Watson, Trystan.
URI: https://cronfa.swan.ac.uk/Record/cronfa63628
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spelling v2 63628 2023-06-13 DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS 1d4fefd19b6c765ea6646226afafb63a RAHUL PATIDAR RAHUL PATIDAR true false 2023-06-13 Perovskite solar cells (PSCs) have gained a lot of attention in recent years because of their outstanding optoelectronic properties and ability to tolerate defects. Additionally, they can be produced at high throughput using solution processing techniques. It is this feature of perovskite that is leveraged in this work to show their scale up potential by R2R slot die coating.Slot die coating is a highly precise and controllable technique that can be used to coat a wide range of materials onto a variety of substrates, including flexible and rigid materials. Slot die coating is commonly used in the production of electronic devices, solar cells, and other products that require thin, uniform films of materials. First a P-I-N architecture of PSCs was developed and optimised with 4 layers slot die coated. This included the hole transport layer (PEDOT:PSS), active layer (MAPbI3), electron transport layer (PCBM), buffer layer (BCP). With 4 R2R slot die coated layer, a stabilised PCE of 12% is achieved. Further, a low toxic solvent system was used to coat the MAPbI3 and its economic benefits are discussed. Next, in efforts to replace PEDOT:PSS, PTAA hole transport layer was explored. Due to thin coating of PTAA on rough surfaces of PET-ITO, PTAA based devices resulted in high shorting. To avoid this a thin buffer layer of PEDOT:PSS on PET-ITO was slot die coated before coating PTAA. This improved the performance of the PSCs to 15.2%. Further, the role of PEDOT:PSS is characterised using AFM and XPS. Additionally, the optimization of a R2R slot die coating process for MAPbI3 was carried out on a PTAA surface. The loss of performance that occurred during the transfer from spin coating to R2R slot die coating was characterized, and multiple theories were tested to understand the cause. It was found that the poor interface between MAPbI3 and PTAA was responsible for the drop in performance. Finally, the addition of dimethyl sulfoxide (DMSO) helped to reduce the gap in performance between R2R and spin-coated MAPbI3 on PTAA hole transport layers. The presence of DMSO slowed the growth of crystal formation, leading to improved crystal orientation and improved performance of the PSCs. E-Thesis Swansea, Wales, UK Perovskite solar cells, thin films, roll-to-roll, slot die coating, scale up 30 5 2023 2023-05-30 10.23889/SUthesis.63628 COLLEGE NANME COLLEGE CODE Swansea University Watson, Trystan. Doctoral Ph.D European Union’s Horizon 2020 2023-09-29T10:35:00.4692667 2023-06-13T12:16:21.3774036 Faculty of Science and Engineering School of Engineering and Applied Sciences - Materials Science and Engineering RAHUL PATIDAR 1 63628__27823__d9e1ab65557b4bdda7ef56ab1193021e.pdf 2023_Patidar_R.final.63628.pdf 2023-06-13T12:20:28.2498089 Output 8099761 application/pdf E-Thesis – open access true Copyright: The Author, Rahul Patidar, 2023. true eng
title DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS
spellingShingle DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS
RAHUL PATIDAR
title_short DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS
title_full DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS
title_fullStr DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS
title_full_unstemmed DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS
title_sort DEVELOPMENT OF ROLL-TO-ROLL SLOT DIE COATED PEROVSKITE SOLAR CELLS
author_id_str_mv 1d4fefd19b6c765ea6646226afafb63a
author_id_fullname_str_mv 1d4fefd19b6c765ea6646226afafb63a_***_RAHUL PATIDAR
author RAHUL PATIDAR
author2 RAHUL PATIDAR
format E-Thesis
publishDate 2023
institution Swansea University
doi_str_mv 10.23889/SUthesis.63628
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 Engineering and Applied Sciences - Materials Science and Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Materials Science and Engineering
document_store_str 1
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description Perovskite solar cells (PSCs) have gained a lot of attention in recent years because of their outstanding optoelectronic properties and ability to tolerate defects. Additionally, they can be produced at high throughput using solution processing techniques. It is this feature of perovskite that is leveraged in this work to show their scale up potential by R2R slot die coating.Slot die coating is a highly precise and controllable technique that can be used to coat a wide range of materials onto a variety of substrates, including flexible and rigid materials. Slot die coating is commonly used in the production of electronic devices, solar cells, and other products that require thin, uniform films of materials. First a P-I-N architecture of PSCs was developed and optimised with 4 layers slot die coated. This included the hole transport layer (PEDOT:PSS), active layer (MAPbI3), electron transport layer (PCBM), buffer layer (BCP). With 4 R2R slot die coated layer, a stabilised PCE of 12% is achieved. Further, a low toxic solvent system was used to coat the MAPbI3 and its economic benefits are discussed. Next, in efforts to replace PEDOT:PSS, PTAA hole transport layer was explored. Due to thin coating of PTAA on rough surfaces of PET-ITO, PTAA based devices resulted in high shorting. To avoid this a thin buffer layer of PEDOT:PSS on PET-ITO was slot die coated before coating PTAA. This improved the performance of the PSCs to 15.2%. Further, the role of PEDOT:PSS is characterised using AFM and XPS. Additionally, the optimization of a R2R slot die coating process for MAPbI3 was carried out on a PTAA surface. The loss of performance that occurred during the transfer from spin coating to R2R slot die coating was characterized, and multiple theories were tested to understand the cause. It was found that the poor interface between MAPbI3 and PTAA was responsible for the drop in performance. Finally, the addition of dimethyl sulfoxide (DMSO) helped to reduce the gap in performance between R2R and spin-coated MAPbI3 on PTAA hole transport layers. The presence of DMSO slowed the growth of crystal formation, leading to improved crystal orientation and improved performance of the PSCs.
published_date 2023-05-30T10:35:01Z
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score 11.036378

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