Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry
Oxide layers on silicon (Si) can effectively reduce the surface recombination velocity due to chemical and field-effect passivation, thereby increasing efficiency of PV devices. We propose simple experimental technique that provides information on interfacial Si/oxide charge. Here, interfacial charg...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2025-02-01
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| Series: | Electrochemistry Communications |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248125000104 |
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| author | Aldis Šilėnas Laurynas Staišiūnas Putinas Kalinauskas Konstantinas Leinartas Asta Grigucevičienė Andžej Lučun Skirmantė Tutlienė Eimutis Juzeliūnas |
| author_facet | Aldis Šilėnas Laurynas Staišiūnas Putinas Kalinauskas Konstantinas Leinartas Asta Grigucevičienė Andžej Lučun Skirmantė Tutlienė Eimutis Juzeliūnas |
| author_sort | Aldis Šilėnas |
| collection | DOAJ |
| description | Oxide layers on silicon (Si) can effectively reduce the surface recombination velocity due to chemical and field-effect passivation, thereby increasing efficiency of PV devices. We propose simple experimental technique that provides information on interfacial Si/oxide charge. Here, interfacial charging in atmosphere of crystalline p-Si with thin hafnia layers deposited using atomic layer deposition and sol–gel techniques were studied by means of the transverse electric resistometry. The samples exhibited the current–voltage (I–V) characteristics, which were analogous to those known for a p-n junction when the Si surface is negatively charged. We also demonstrate the detection of charging effects in electrolyte by measuring the photo-induced capacitance, potential, resistance, and current. The charge transfer inhibition during hydrogen evolution reaction is shown to depend on interfacial charging effects rather than resistance of HfO2 layer. The proposed methodologies can be extended to a wider range of passivating oxides on semiconductors. |
| format | Article |
| id | doaj-art-c0fcfd1fefb84cbca65eb4442f5a1f52 |
| institution | Kabale University |
| issn | 1388-2481 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj-art-c0fcfd1fefb84cbca65eb4442f5a1f522025-02-09T04:59:48ZengElsevierElectrochemistry Communications1388-24812025-02-01171107871Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistryAldis Šilėnas0Laurynas Staišiūnas1Putinas Kalinauskas2Konstantinas Leinartas3Asta Grigucevičienė4Andžej Lučun5Skirmantė Tutlienė6Eimutis Juzeliūnas7Centre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaCentre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaCentre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaCentre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaCentre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaCentre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaCentre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaCorresponding author.; Centre for Physical Sciences and Technology, Saulėtekio av. 3, Vilnius, LithuaniaOxide layers on silicon (Si) can effectively reduce the surface recombination velocity due to chemical and field-effect passivation, thereby increasing efficiency of PV devices. We propose simple experimental technique that provides information on interfacial Si/oxide charge. Here, interfacial charging in atmosphere of crystalline p-Si with thin hafnia layers deposited using atomic layer deposition and sol–gel techniques were studied by means of the transverse electric resistometry. The samples exhibited the current–voltage (I–V) characteristics, which were analogous to those known for a p-n junction when the Si surface is negatively charged. We also demonstrate the detection of charging effects in electrolyte by measuring the photo-induced capacitance, potential, resistance, and current. The charge transfer inhibition during hydrogen evolution reaction is shown to depend on interfacial charging effects rather than resistance of HfO2 layer. The proposed methodologies can be extended to a wider range of passivating oxides on semiconductors.http://www.sciencedirect.com/science/article/pii/S1388248125000104 |
| spellingShingle | Aldis Šilėnas Laurynas Staišiūnas Putinas Kalinauskas Konstantinas Leinartas Asta Grigucevičienė Andžej Lučun Skirmantė Tutlienė Eimutis Juzeliūnas Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry Electrochemistry Communications |
| title | Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry |
| title_full | Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry |
| title_fullStr | Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry |
| title_full_unstemmed | Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry |
| title_short | Thin hafnia layer on silicon – Study of interfacial charging and charge transfer by resistometry and photoelectrochemistry |
| title_sort | thin hafnia layer on silicon study of interfacial charging and charge transfer by resistometry and photoelectrochemistry |
| url | http://www.sciencedirect.com/science/article/pii/S1388248125000104 |
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