KR102044454B1 - 양자점 방식의 방사선 계측기 - Google Patents
양자점 방식의 방사선 계측기 Download PDFInfo
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- KR102044454B1 KR102044454B1 KR1020170143434A KR20170143434A KR102044454B1 KR 102044454 B1 KR102044454 B1 KR 102044454B1 KR 1020170143434 A KR1020170143434 A KR 1020170143434A KR 20170143434 A KR20170143434 A KR 20170143434A KR 102044454 B1 KR102044454 B1 KR 102044454B1
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- Prior art keywords
- quantum dot
- radiation
- substrate
- dot structure
- sensor material
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- 239000002096 quantum dot Substances 0.000 title claims abstract description 35
- 230000005855 radiation Effects 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 25
- 150000001875 compounds Chemical class 0.000 claims abstract description 16
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052793 cadmium Inorganic materials 0.000 claims abstract description 11
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 8
- 239000010703 silicon Substances 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 claims description 16
- 239000000758 substrate Substances 0.000 claims description 8
- 239000010409 thin film Substances 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000000206 photolithography Methods 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims 1
- 230000003287 optical effect Effects 0.000 claims 1
- -1 CZT compound Chemical class 0.000 abstract description 7
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 25
- 238000005259 measurement Methods 0.000 description 11
- 239000004065 semiconductor Substances 0.000 description 9
- 235000009518 sodium iodide Nutrition 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical compound [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005251 gamma ray Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/16—Measuring radiation intensity
- G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
- G01T1/1611—Applications in the field of nuclear medicine, e.g. in vivo counting using both transmission and emission sources sequentially
- G01T1/1614—Applications in the field of nuclear medicine, e.g. in vivo counting using both transmission and emission sources sequentially with semiconductor detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/02—Dosimeters
- G01T1/026—Semiconductor dose-rate meters
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- General Physics & Mathematics (AREA)
- Biomedical Technology (AREA)
- Optics & Photonics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Measurement Of Radiation (AREA)
Abstract
Description
도 2는 도 1에 도시된 센서물질 및 PM튜브의 구조를 개략적으로 보여주는 도면이다.
도 3은 도 2의 규소(Si), 카트늄(Cd), 아연(Zn)원자가 양자점 구조의 화합물로 집적된 상태를 보여주는 도면이다.
Claims (3)
- 센서물질(3)과, 광증배관(PM튜브;5)과, 증폭기(7)와, 채널분석기(9)와, 전원부(11)를 포함하는 방사선 계측기로서,
센서물질(3)은 규소(Si), 카트늄(Cd), 아연(Zn)으로 구성된 SiCdZn 화합물층이 양자점 구조로 적층되며,
양자점의 적층은, 기판 상에 유전체 박막을 증착한 후, 양자점이 성장되어야 할 위치에 포토 리소그래피와 식각공정을 이용하여 유전체 박막 패턴을 형성하고,
유전체 박막 패턴이 형성된 기판을 성장장치에 배치하고, 기판을 열 세척한 후, 버퍼층과 장벽층을 순차적으로 성장시키고,
각 장벽층에 하나의 드롭렛(droplet)을 형성하고, 배기주기를 두어 분압을 낮춘 후, 아신(arsine)을 공급하여 드롭렛을 양자점으로 전환시키고, 양자점이 형성된 기판에 열처리를 실시하여 장벽층과 버퍼층을 성장시켜 보호층을 형성하는 것을 특징으로 하는 방사선 계측기. - 삭제
- 삭제
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KR20190048461A KR20190048461A (ko) | 2019-05-09 |
KR102044454B1 true KR102044454B1 (ko) | 2019-11-14 |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996021868A1 (en) * | 1995-01-11 | 1996-07-18 | The Government Of The United States Of America, Represented By The Secretary Of The Navy | Glass matrix doped with activated luminescent nanocrystalline particles |
JP2010522806A (ja) * | 2007-03-26 | 2010-07-08 | ゼネラル・エレクトリック・カンパニイ | シンチレータおよびその作製方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2006343172A (ja) * | 2005-06-08 | 2006-12-21 | Hitachi Ltd | コンピュータ断層撮影装置 |
KR101410736B1 (ko) * | 2012-11-26 | 2014-06-24 | 한국전기연구원 | 면 광원 일체형의 다층 구조를 가지는 디지털 엑스-선 영상 검출기 |
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Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996021868A1 (en) * | 1995-01-11 | 1996-07-18 | The Government Of The United States Of America, Represented By The Secretary Of The Navy | Glass matrix doped with activated luminescent nanocrystalline particles |
JP2010522806A (ja) * | 2007-03-26 | 2010-07-08 | ゼネラル・エレクトリック・カンパニイ | シンチレータおよびその作製方法 |
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