Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells
Perovskite solar cells (PSCs) offer advantages over widely deployed silicon solar cells in terms of ease of fabrication; however, the device is still under rigorous materials optimization for cell performance, stability, and cost. In this work, we explore a version of a PSC by replacing the polymeri...
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MDPI
2022
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| Online Access: | http://umpir.ump.edu.my/id/eprint/40244/ http://umpir.ump.edu.my/id/eprint/40244/1/Nitrogen-doped%20titanium%20dioxide%20as%20a%20hole%20transport%20layer.pdf |
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| author | Pochont, Nitin Ralph Sekhar, Yendaluru Raja Kuraganti, Vasu Jose, Rajan |
| author_facet | Pochont, Nitin Ralph Sekhar, Yendaluru Raja Kuraganti, Vasu Jose, Rajan |
| author_sort | Pochont, Nitin Ralph |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | Perovskite solar cells (PSCs) offer advantages over widely deployed silicon solar cells in terms of ease of fabrication; however, the device is still under rigorous materials optimization for cell performance, stability, and cost. In this work, we explore a version of a PSC by replacing the polymeric hole transport layer (HTL) such as Spiro-OMeTAD, P3HT, and PEDOT: PSS with a more air-stable metal oxide, viz., nitrogen-doped titanium dioxide (TiO2:N). Numerical simulations on formamidinium (FA)-based PSCs in the FTO/TiO2/FAPbI3/Ag configuration have been carried out to depict the behaviour of the HTL as well as the effect of absorber layer thickness (∆t) on photovoltaic parameters. The results show that the cell output increases when the HTL bandgap increases from 2.5 to 3.0 eV. By optimizing the absorber layer thickness and the gradient in defect density (Nt), the device structure considered here can deliver a maximum power conversion efficiency of ~21.38% for a lower HTL bandgap (~2.5 eV) and ~26.99% for a higher HTL bandgap of ~3.0 eV. The results are validated by reproducing the performance of PSCs employing commonly used polymeric HTLs, viz. Spiro-OMeTAD, P3HT, and PEDOT: PSS as well as high power conversion efficiency in the highly crystalline perovskite layer. Therefore, the present study provides high-performing, cost-effective PSCs using TiO2:N. |
| first_indexed | 2025-11-15T03:37:47Z |
| format | Article |
| id | ump-40244 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:37:47Z |
| publishDate | 2022 |
| publisher | MDPI |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-402442024-02-14T01:31:18Z http://umpir.ump.edu.my/id/eprint/40244/ Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells Pochont, Nitin Ralph Sekhar, Yendaluru Raja Kuraganti, Vasu Jose, Rajan HD Industries. Land use. Labor Q Science (General) T Technology (General) Perovskite solar cells (PSCs) offer advantages over widely deployed silicon solar cells in terms of ease of fabrication; however, the device is still under rigorous materials optimization for cell performance, stability, and cost. In this work, we explore a version of a PSC by replacing the polymeric hole transport layer (HTL) such as Spiro-OMeTAD, P3HT, and PEDOT: PSS with a more air-stable metal oxide, viz., nitrogen-doped titanium dioxide (TiO2:N). Numerical simulations on formamidinium (FA)-based PSCs in the FTO/TiO2/FAPbI3/Ag configuration have been carried out to depict the behaviour of the HTL as well as the effect of absorber layer thickness (∆t) on photovoltaic parameters. The results show that the cell output increases when the HTL bandgap increases from 2.5 to 3.0 eV. By optimizing the absorber layer thickness and the gradient in defect density (Nt), the device structure considered here can deliver a maximum power conversion efficiency of ~21.38% for a lower HTL bandgap (~2.5 eV) and ~26.99% for a higher HTL bandgap of ~3.0 eV. The results are validated by reproducing the performance of PSCs employing commonly used polymeric HTLs, viz. Spiro-OMeTAD, P3HT, and PEDOT: PSS as well as high power conversion efficiency in the highly crystalline perovskite layer. Therefore, the present study provides high-performing, cost-effective PSCs using TiO2:N. MDPI 2022-11 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/40244/1/Nitrogen-doped%20titanium%20dioxide%20as%20a%20hole%20transport%20layer.pdf Pochont, Nitin Ralph and Sekhar, Yendaluru Raja and Kuraganti, Vasu and Jose, Rajan (2022) Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells. Molecules, 27 (7927). pp. 1-19. ISSN 1420-3049. (Published) https://doi.org/10.3390/molecules27227927 https://doi.org/10.3390/molecules27227927 |
| spellingShingle | HD Industries. Land use. Labor Q Science (General) T Technology (General) Pochont, Nitin Ralph Sekhar, Yendaluru Raja Kuraganti, Vasu Jose, Rajan Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells |
| title | Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells |
| title_full | Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells |
| title_fullStr | Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells |
| title_full_unstemmed | Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells |
| title_short | Nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells |
| title_sort | nitrogen-doped titanium dioxide as a hole transport layer for high-efficiency formamidinium perovskite solar cells |
| topic | HD Industries. Land use. Labor Q Science (General) T Technology (General) |
| url | http://umpir.ump.edu.my/id/eprint/40244/ http://umpir.ump.edu.my/id/eprint/40244/ http://umpir.ump.edu.my/id/eprint/40244/ http://umpir.ump.edu.my/id/eprint/40244/1/Nitrogen-doped%20titanium%20dioxide%20as%20a%20hole%20transport%20layer.pdf |