Charged oxide inversion layer (COIL) solar cells
Lead Research Organisation:
University of Warwick
Department Name: Sch of Engineering
Abstract
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Organisations
Publications
Yadav A
(2024)
Formation and annihilation of bulk recombination-active defects induced by muon irradiation of crystalline silicon
in Journal of Applied Physics
Xu X
(2023)
Interfacial Chemistry Effects in the Electrochemical Performance of Silicon Electrodes under Lithium-Ion Battery Conditions.
in Small (Weinheim an der Bergstrasse, Germany)
Wratten A
(2023)
Mechanisms of Silicon Surface Passivation by Negatively Charged Hafnium Oxide Thin Films
in IEEE Journal of Photovoltaics
Wratten A
(2023)
Hafnium oxide: A thin film dielectric with controllable etch resistance for semiconductor device fabrication
in AIP Advances
Pain S
(2024)
Influence of co-reactants on surface passivation by nanoscale hafnium oxide layers grown by atomic layer deposition on silicon
in RSC Applied Interfaces
Pain S
(2022)
Electronic Characteristics of Ultra-Thin Passivation Layers for Silicon Photovoltaics
in Advanced Materials Interfaces
Pain S
(2025)
Interfacial oxides for charge control of hafnium oxide surface passivation of silicon
in Solar Energy Materials and Solar Cells
| Description | The project (which is ongoing) has identified new ways of controlling the surfaces of silicon by deposition of nanoscale coatings. These coatings will be used to reduce charge carrier recombination and improve the properties of silicon photovoltaic cells. The project has identified ways of controlling both chemical and field effect passivation mechanisms using dielectrics deposited via atomic layer deposition (including aluminium oxide and hafnium oxide). Engineering the charge distribution in these films could potentially enable the development of a new type of solar cell based on inversion layers, which has the potential to be cheaper to process than incumbent technologies. Work done in the project also has applications in other fields, including modulation of THz radiation, coatings for battery anodes, and diagnostics of defect formation in electronic materials. |
| Exploitation Route | The results of the research will be used by many other researchers worldwide working on silicon photovoltaic technologies. The work we have done provides the processing conditions necessary to provide high-quality surface passivation of semiconductor surfaces. This is valuable to research groups and commercial organisations working on developing high-efficiency photovoltaic devices, as well as other types of electronic devices. |
| Sectors | Electronics Energy |
| Description | EPSRC Supergen Solar Hub: International and Industrial Engagement Fund |
| Amount | £5,280 (GBP) |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 04/2022 |
| End | 07/2023 |
| Description | Research Grant |
| Amount | £19,259 (GBP) |
| Funding ID | RGS\R2\212150 |
| Organisation | The Royal Society |
| Sector | Charity/Non Profit |
| Country | United Kingdom |
| Start | 01/2022 |
| End | 01/2023 |
| Title | SiNx and AlOx Nanolayers in Hole Selective Passivating Contacts for High Efficiency Silicon Solar Cells |
| Description | |
| Type Of Material | Database/Collection of data |
| Year Produced | 2023 |
| Provided To Others? | Yes |
| URL | https://ora.ox.ac.uk/objects/uuid:178c5e9f-2cd7-45e9-9632-9916c0263021 |