Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors
Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication....
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Pekarek, Jakub [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2016 |
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| Schlagwörter: |
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| Anmerkung: |
© The Minerals, Metals & Materials Society 2016 |
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| Übergeordnetes Werk: |
Enthalten in: Journal of electronic materials - Springer US, 1972, 46(2016), 4 vom: 01. Dez., Seite 1996-2002 |
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| Übergeordnetes Werk: |
volume:46 ; year:2016 ; number:4 ; day:01 ; month:12 ; pages:1996-2002 |
| Links: |
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| DOI / URN: |
10.1007/s11664-016-5065-5 |
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OLC2042351571 |
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| 520 | |a Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. | ||
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| 700 | 1 | |a Zazvorka, Jakub |4 aut | |
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10.1007/s11664-016-5065-5 doi (DE-627)OLC2042351571 (DE-He213)s11664-016-5065-5-p DE-627 ger DE-627 rakwb eng 670 VZ Pekarek, Jakub verfasserin (orcid)0000-0002-5408-4997 aut Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society 2016 Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. CdTe/CdZnTe surface treatments passivation leakage current Belas, Eduard aut Zazvorka, Jakub aut Enthalten in Journal of electronic materials Springer US, 1972 46(2016), 4 vom: 01. Dez., Seite 1996-2002 (DE-627)129398233 (DE-600)186069-0 (DE-576)014781387 0361-5235 nnns volume:46 year:2016 number:4 day:01 month:12 pages:1996-2002 https://doi.org/10.1007/s11664-016-5065-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 46 2016 4 01 12 1996-2002 |
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10.1007/s11664-016-5065-5 doi (DE-627)OLC2042351571 (DE-He213)s11664-016-5065-5-p DE-627 ger DE-627 rakwb eng 670 VZ Pekarek, Jakub verfasserin (orcid)0000-0002-5408-4997 aut Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society 2016 Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. CdTe/CdZnTe surface treatments passivation leakage current Belas, Eduard aut Zazvorka, Jakub aut Enthalten in Journal of electronic materials Springer US, 1972 46(2016), 4 vom: 01. Dez., Seite 1996-2002 (DE-627)129398233 (DE-600)186069-0 (DE-576)014781387 0361-5235 nnns volume:46 year:2016 number:4 day:01 month:12 pages:1996-2002 https://doi.org/10.1007/s11664-016-5065-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 46 2016 4 01 12 1996-2002 |
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10.1007/s11664-016-5065-5 doi (DE-627)OLC2042351571 (DE-He213)s11664-016-5065-5-p DE-627 ger DE-627 rakwb eng 670 VZ Pekarek, Jakub verfasserin (orcid)0000-0002-5408-4997 aut Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society 2016 Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. CdTe/CdZnTe surface treatments passivation leakage current Belas, Eduard aut Zazvorka, Jakub aut Enthalten in Journal of electronic materials Springer US, 1972 46(2016), 4 vom: 01. Dez., Seite 1996-2002 (DE-627)129398233 (DE-600)186069-0 (DE-576)014781387 0361-5235 nnns volume:46 year:2016 number:4 day:01 month:12 pages:1996-2002 https://doi.org/10.1007/s11664-016-5065-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 46 2016 4 01 12 1996-2002 |
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10.1007/s11664-016-5065-5 doi (DE-627)OLC2042351571 (DE-He213)s11664-016-5065-5-p DE-627 ger DE-627 rakwb eng 670 VZ Pekarek, Jakub verfasserin (orcid)0000-0002-5408-4997 aut Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society 2016 Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. CdTe/CdZnTe surface treatments passivation leakage current Belas, Eduard aut Zazvorka, Jakub aut Enthalten in Journal of electronic materials Springer US, 1972 46(2016), 4 vom: 01. Dez., Seite 1996-2002 (DE-627)129398233 (DE-600)186069-0 (DE-576)014781387 0361-5235 nnns volume:46 year:2016 number:4 day:01 month:12 pages:1996-2002 https://doi.org/10.1007/s11664-016-5065-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 46 2016 4 01 12 1996-2002 |
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10.1007/s11664-016-5065-5 doi (DE-627)OLC2042351571 (DE-He213)s11664-016-5065-5-p DE-627 ger DE-627 rakwb eng 670 VZ Pekarek, Jakub verfasserin (orcid)0000-0002-5408-4997 aut Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors 2016 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © The Minerals, Metals & Materials Society 2016 Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. CdTe/CdZnTe surface treatments passivation leakage current Belas, Eduard aut Zazvorka, Jakub aut Enthalten in Journal of electronic materials Springer US, 1972 46(2016), 4 vom: 01. Dez., Seite 1996-2002 (DE-627)129398233 (DE-600)186069-0 (DE-576)014781387 0361-5235 nnns volume:46 year:2016 number:4 day:01 month:12 pages:1996-2002 https://doi.org/10.1007/s11664-016-5065-5 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_70 AR 46 2016 4 01 12 1996-2002 |
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Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors |
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Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. © The Minerals, Metals & Materials Society 2016 |
| abstractGer |
Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. © The Minerals, Metals & Materials Society 2016 |
| abstract_unstemmed |
Abstract The spectral resolution and charge collection efficiency (CCE) of cadmium telluride (CdTe) and cadmium zinc telluride (CZT) room-temperature x-ray and gamma-ray detectors are often limited by high surface leakage current due to conducting surface species created during detector fabrication. Surface treatments play a major role in reduction of this surface leakage current. The effect of various types of surface etching and passivation on the leakage current and thereby the spectral energy resolution, CCE, and internal electric field profile of CdTe/CZT detectors has been studied. The main aim of this work is preparation of long-term stable detectors with strongly reduced leakage current. The time stability of the current–voltage characteristic and spectral resolution was investigated during 21 days and 1 year, respectively, after performing surface treatments. Our results suggest that the optimal detector preparation method is chemomechanical polishing in bromine-ethylene glycol solution followed by chemical etching in bromine-methanol solution then surface passivation in potassium hydroxide or ammonium fluoride ($ NH_{4} $F/$ H_{2} $$ O_{2} $). Detectors prepared using this optimal treatment exhibited low leakage current, high spectral resolution, and long-term stability compared with those subjected to other surface preparation methods. © The Minerals, Metals & Materials Society 2016 |
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Long-Term Stable Surface Treatments on CdTe and CdZnTe Radiation Detectors |
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Belas, Eduard Zazvorka, Jakub |
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