WO2005091311A1 - サーミスタ素子 - Google Patents
サーミスタ素子 Download PDFInfo
- Publication number
- WO2005091311A1 WO2005091311A1 PCT/JP2005/004791 JP2005004791W WO2005091311A1 WO 2005091311 A1 WO2005091311 A1 WO 2005091311A1 JP 2005004791 W JP2005004791 W JP 2005004791W WO 2005091311 A1 WO2005091311 A1 WO 2005091311A1
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- WIPO (PCT)
- Prior art keywords
- layer
- thermistor
- substance
- thermistor element
- resistance
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/008—Thermistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
- H01C7/021—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient formed as one or more layers or coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
- H01C7/041—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient formed as one or more layers or coatings
Definitions
- the present invention relates to a temperature sensor, an infrared sensor, an overcurrent prevention element, a temperature control element, and a temperature switch used for controlling electric or electronic devices.
- Patent Document 1 A PTC element in which a conductive carbon black as a filler is dispersed in an organic polymer material as a matrix or 2) matrix has been proposed (see Patent Document 1), and is used for various electric and electronic devices.
- PTC devices had the following problems. That is, in 1), the resistance is large because the low resistance state is a semiconductor.
- the method 2) uses the principle that the organic polymer, which is the matrix, swells as the temperature rises and the distance between the carbon black particles, which is the filler, increases, increasing the resistance at high temperatures. Since the response to this depends on the swelling of the organic polymer, there was a problem that the high-speed response to a temperature change was poor.
- an object of the present invention is to provide a thermistor element having high-speed response to temperature and having a large ON / OFF ratio before and after the operating temperature.
- thermistor element comprising a second layer composed of the substance 2;
- the first substance is preferably a substance having a positive temperature coefficient of resistance and not more than 100 m ⁇ cm at or below the operating temperature!
- the said thermistor element wherein the interface between the first layer and the second layer changes to a Schottky barrier as the state changes to semiconductivity or insulation.
- the first substance may be a strongly correlated electron-based substance.
- the first substance may be a vanadium oxide.
- VM Object
- M is Cr or Ti, 0 ⁇ x ⁇ 0.2
- NiS Se 0.5 ⁇ y ⁇ l.67
- M is a group element composed of a rare earth element and 0 ⁇ z ⁇ 0.6).
- the first substance may be vanadium oxide (VM) O (M is Cr or Ti, 0 ⁇ x ⁇ 0.2). Range of x above (0 ⁇
- the transition temperature of the thermistor element T force S200-600K preferably 30
- the second substance may be ⁇ -type semiconducting oxide, ⁇ -type semiconducting oxide, and ⁇ -type or ⁇ -type elemental semiconductor power. It is good to be selected.
- the ⁇ -type semiconductive oxide is preferably selected from the group consisting of ZnO, In—Sn oxide (ITO), and SrTiO.
- the p-type semiconductive oxide is SrCuO, NiO, CuO, La
- It is preferably selected from the group consisting of Sr-xCuO (0 ⁇ x ⁇ 0.2) and EuTiO3.
- the p-type or n-type elemental semiconductor may be Si.
- the second layer may have a thickness of 100 Onm or less, preferably 100 nm or less.
- a thermistor device comprising a thermistor element; and voltage control means for controlling a voltage applied to the thermistor element, wherein the thermistor element has a positive or negative resistance temperature coefficient And a second layer directly laminated on the first layer, the second layer also having a conductive or semiconductive second material force. Thermistor device.
- the first substance is preferably a substance having a positive temperature coefficient of resistance.
- a thermistor device having a thermistor element; and voltage control means for controlling a voltage applied to the thermistor element, wherein the thermistor element has a first material force having a positive resistance temperature coefficient.
- a thermistor element comprising: a first layer comprising: a first layer; and a second layer directly laminated on the first layer, the second layer having a semiconductive second material force. As the first substance changes to a semiconductive or insulating property around the transition temperature T, the interface between the first layer and the second layer changes to a ⁇ barrier.
- Thermistor device characterized by the following.
- a thermistor device having a thermistor element; and voltage control means for controlling a voltage applied to the thermistor element, wherein the thermistor element has a first material force having a positive resistance temperature coefficient.
- a thermistor element comprising: a first layer comprising: a first layer; and a second layer directly laminated on the first layer, the second layer having a conductive second material force. The interface between the first layer and the second layer changes to a Schottky barrier as the material changes to a semiconductive or insulating property before and after the transition temperature ⁇ . Thermistor device.
- the first substance is vanadium oxide (V ⁇ ) ⁇ ( ⁇ is Cr or Ti, 0 ⁇ x ⁇ 0.2), NiS Se (0 . 5 ⁇ y ⁇ l. 6
- BEDT- TTF salt and manganese oxide ( ⁇ ' ⁇ ) ⁇ ( ⁇ ' is an alkaline earth element, ⁇ rare earth element, 0 ⁇ 0.6) .
- the first substance may be vanadium oxide (V ⁇ ) ⁇ ( ⁇ is Cr or Ti, 0 ⁇ x ⁇ 0.2) .
- V ⁇ vanadium oxide
- ⁇ is Cr or Ti, 0 ⁇ x ⁇ 0.2
- the transition temperature T of the thermistor element is 200-600K, preferably 300-400 ⁇ ⁇ ⁇ ⁇ , more preferably 340-370 ⁇ !
- the second substance may be selected from an ⁇ -type semiconductive oxide, a ⁇ -type semiconductive oxide, and a ⁇ -type or ⁇ -type elemental semiconductor. It is better to be selected from the group consisting of:
- the ⁇ -type semiconductive oxide is preferably selected from the group consisting of ZnO, In—Sn oxide (ITO), and SrTiO.
- the p-type semiconductor oxide is SrCuO, NiO, CuO, La
- It is preferably selected from the group consisting of Sr-xCuO (0 ⁇ x ⁇ 0.2) and EuTiO3.
- the p-type or n-type elemental semiconductor may be Si.
- the second layer may have a thickness of 100 nm or less, preferably 100 nm or less.
- thermistor element having high-speed response to temperature and having a large ONZOFF ratio at an operating temperature.
- a thermistor device which is compact, has a high-speed response to temperature, can variably control the operating temperature, and can variably control the ONZOFF ratio at the operating temperature. Can be provided.
- the thermistor element of the present invention comprises a first layer of a first material having a positive or negative temperature coefficient of resistance, and a second layer directly laminated on the first layer, the layer being electrically conductive or semiconductive. And a second layer that also has the property of a second material.
- FIG. 1 shows a typical configuration example of the thermistor element of the present invention.
- the thermistor element 1 includes only a first layer 2 having a positive or negative temperature coefficient of resistance, which is a first material, and a second layer 3 directly laminated on the first layer 2. It is also powerful.
- the first layer is preferably made of a first material having a positive or negative temperature coefficient of resistance, and more preferably a first material having a positive temperature coefficient of resistance.
- the first substance is preferably selected from strongly correlated electron-based substances.
- strongly correlated electron-based substance refers to a group of substances in which electrons that conduct in the substance have a strong interaction with each other and that cause a phase transition of the metal insulator due to the effect.
- the first substance is vanadium oxide (V M) O (M is Cr or Ti, 0 ⁇ x ⁇ 0.2), NiS Se (0.5 ⁇ y ⁇ l.67)
- ⁇ ' ⁇ is an alkaline earth element, ⁇ rare earth element, 0 ⁇ 0.6
- V ⁇ vanadium oxide
- ⁇ is Cr or Ti, 0 ⁇ x ⁇ 0.2
- the thickness of the first layer has little effect on the characteristics, but the voltage inside the device is small. In order to suppress the power loss, it is preferably less than lOOOnm! / ,.
- the first substance can be prepared by a conventional method, for example, an arc melting method. Further, the single crystal of the first substance can be prepared by a chemical vapor transport method.
- the “distillation gas-phase transport method” means that the polycrystalline powder of the first substance is transported by a transporting agent such as shiridani tellurium (TeCl)
- a single crystal of the first substance is obtained by vacuum-sealing a quartz tube or the like and applying a temperature gradient.
- (V Cr) O is used as the first substance, and the salt is used as a transporting agent.
- (123 is recrystallized. In this way, the crystal grows slowly while repeating vaporization and solidification, and a single crystal of 110 mm size can be obtained.
- the quality and quality depend on the type of transport agent, density, setting of temperature gradient, preparation time, etc.
- the second layer is preferably made of a second substance having conductivity or semiconductivity.
- n-type semiconductive oxides such as ZnO, In—Sn oxide (ITO), and SrTi O; SrCu O, NiO, CuO, La Sr—xCuO (0 ⁇ x ⁇ 0.2
- P-type semiconductive oxides such as EuTiO
- p-type or n-type elemental semiconductors such as Si.
- the second layer may have a thickness of less than 100 nm, preferably less than 100 nm.
- FIG. 2 is a schematic diagram when measuring the resistance of the thermistor element 1 of the present invention in FIG.
- ohmic electrodes are formed on the first layer 2 and the second layer 3 of the thermistor element 1, respectively.
- An ohmic electrode 5 made of In is formed on the first layer 2 and is formed on the second layer 3.
- Forms an ohmic electrode 6 made of Au. 7 and 8 are electrodes or electric wires.
- the case where the first substance forming the first layer 2 has a positive resistance temperature characteristic (PTC characteristic) will be described below.
- the substance changes from conductive to insulating.
- the resistance at the interface between the first and second layers indicates an ONZOFF ratio that is much more amplified than the resistance change of the thermistor material. This is because the following situation occurs.
- a pn barrier is formed in the range of several hundred thousand A from the interface when the second material is a semiconductor.
- the second material is a metal, a Schottky barrier is formed. This is because a very high potential barrier of about 0.5 to 2 eV is formed for electrons passing through the interface, which hinders the movement of carriers and increases the apparent resistance.
- FIG. 3 shows a case where the second substance is a semiconductor.
- FIG. 4 is a diagram showing that a pn barrier is formed when a substance of the present invention shows an insulating property or a semiconductor.
- the interface resistance becomes the resistance of the thermistor element of the present invention, and the change (ONZOFF ratio) of the resistance before and after the operating temperature becomes much larger than the ONZOFF ratio of the first substance alone.
- the height of the potential barrier depends on the applied voltage, which has a positive correlation with the actual resistance. Therefore, when an apparatus having the thermistor element of the present invention and a voltage control means for controlling the voltage applied to the element is formed, the apparatus can control the potential barrier height, that is, the ONZOFF ratio of the apparatus. it can.
- O polycrystalline body is produced by arc melting method and formed (V Cr) O ZZnO junction
- a thermistor element A-1 was obtained.
- the temperature change of the current-voltage characteristics (IV characteristics) was measured.
- Fig. 4 shows the results at 250K as the IV characteristics of the device II-1 at 290 ° or less, and the results at 306K as the IV characteristics at 290K or more.
- the current increases exponentially with respect to the voltage up to a voltage of about 0.7 V, and a potential barrier of about 0.7 eV is formed at the interface.
- Example 1 The (V Cr) O (thickness: 0.3 mm) used in Example 1 was used alone as a thermistor.
- Element A-2 was used.
- the resistance of element A-2 was measured by an AC two-terminal method using a normal resistance bridge.
- Fig. 5 compares the resistance-temperature curves of element A-1 of Example 1 (indicated by "" in Fig. 5) and element A-2 of Comparative Example 1 (indicated by " ⁇ " in Fig. 5).
- element A-2 shows a slight change in resistance near 290-293K.
- element A-1 shows a change in resistance of about one digit.
- the resistance change is sharper in a narrow temperature range (range of 2-3K) than the conventional BaTiO-based PTC thermistor.
- Sales V O powder is oxidized during storage and its composition is shifted.
- composition X It was confirmed by line diffraction.
- the amount of tellurium was 5 mg / lcc of quartz tube volume.
- the temperature of the tube furnace was set so that one end of the quartz tube was 1050 ° C and the other end was 950 ° C, and a single crystal was grown by a temperature gradient.
- the single crystal grown for one week is removed from the quartz tube, washed with dilute hydrochloric acid to remove tellurium chloride adhering to the surface, and treated with (V Cr) O.
- the single crystal obtained above was set on the sample stage of the vacuum chamber, and a mask was made of aluminum foil so that a thin film would not be attached unnecessarily.
- the chamber one to vacuum (approximately 1 X 1 0- 5 Pa), samples were heated for 1 hour at 400 ° C. While maintaining the temperature, an n-Si thin film is formed on the single crystal obtained above by high-frequency magnetron sputtering (Ar pressure: IPa; output: 100 W), and an element A-3 having a heterostructure is formed. Obtained.
- a gold wire was attached to the device A-3 having a heterostructure obtained above using a silver paste to prepare a measurement sample.
- the sample was fixed in a measurement system, and the whole system was put in a liquid nitrogen vessel, and the temperature dependence of the IV characteristics was evaluated using a natural temperature gradient.
- the I-V characteristics were evaluated using an Agilent semiconductor parameter analyzer. The obtained results are shown in FIGS. 6 and 7 and Table 1.
- FIG. 7 and Table 1 show the results of fitting the IV characteristic curve obtained in FIG. 6 by polynomial approximation.
- the operating temperature of the element A-3 is about 240 K, and the resistance ratio before and after this temperature is 6 ⁇ 10 4 . Therefore, it is understood that the present embodiment can provide a thermistor element having a large ONZOFF ratio at the operating temperature.
- FIG. 1 is a diagram showing a typical configuration example of a thermistor element of the present invention.
- FIG. 2 is a schematic diagram when measuring the resistance of the thermistor element 1 of the present invention in FIG. 1.
- FIG. 3 is a diagram illustrating that a pn barrier is formed by one embodiment of the present invention.
- FIG. 4 is a diagram showing a temperature change of a current-voltage characteristic (IV characteristic) of an element A-1 of Example 1.
- FIG. 5 is a diagram comparing resistance temperature curves of an element A-1 of Example 1 and an element A-2 of Comparative Example 1.
- FIG. 6 is a diagram showing a temperature change of a current-voltage characteristic (IV characteristic) of a device A-3 of Example 2.
- FIG. 7 A diagram showing a resistance-temperature curve of a device A-3 of Example 2.
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Ceramic Engineering (AREA)
- Thermistors And Varistors (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/594,341 US7709922B2 (en) | 2004-03-19 | 2005-03-17 | Thermistor device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-079818 | 2004-03-19 | ||
JP2004079818A JP2005268578A (ja) | 2004-03-19 | 2004-03-19 | サーミスタ素子 |
Publications (1)
Publication Number | Publication Date |
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WO2005091311A1 true WO2005091311A1 (ja) | 2005-09-29 |
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Family Applications (1)
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PCT/JP2005/004791 WO2005091311A1 (ja) | 2004-03-19 | 2005-03-17 | サーミスタ素子 |
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US (1) | US7709922B2 (ja) |
JP (1) | JP2005268578A (ja) |
WO (1) | WO2005091311A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012186471A (ja) * | 2011-03-03 | 2012-09-27 | Samsung Electronics Co Ltd | 電気エネルギー発生装置 |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101765569B (zh) | 2007-08-22 | 2012-11-28 | 株式会社村田制作所 | 半导体陶瓷材料及ntc热敏电阻 |
JP2009253301A (ja) * | 2008-04-04 | 2009-10-29 | Samsung Electronics Co Ltd | ジカルコゲナイド熱電材料 |
US9653672B2 (en) * | 2009-01-06 | 2017-05-16 | Samsung Electronics Co., Ltd | Thermoelectric materials, thermoelectric module including thermoelectric materials, and thermoelectric apparatus including thermoelectric modules |
CN103098149B (zh) * | 2010-09-14 | 2015-09-09 | 株式会社村田制作所 | 半导体陶瓷元件及其制造方法 |
JP5644940B2 (ja) * | 2011-03-28 | 2014-12-24 | 株式会社村田製作所 | 抵抗体および抵抗素子 |
KR101667097B1 (ko) | 2011-06-28 | 2016-10-17 | 휴렛 팩커드 엔터프라이즈 디벨롭먼트 엘피 | 시프트 가능 메모리 |
KR20140065477A (ko) | 2011-10-27 | 2014-05-29 | 휴렛-팩커드 디벨롭먼트 컴퍼니, 엘.피. | 원자적 동작을 지원하는 시프트 가능형 메모리 |
US9331700B2 (en) * | 2011-10-28 | 2016-05-03 | Hewlett Packard Enterprise Development Lp | Metal-insulator phase transition flip-flop |
WO2013115779A1 (en) | 2012-01-30 | 2013-08-08 | Hewlett-Packard Development Company, L.P. | Word shift static random access memory (ws-sram) |
US9542307B2 (en) | 2012-03-02 | 2017-01-10 | Hewlett Packard Enterprise Development Lp | Shiftable memory defragmentation |
US9064773B2 (en) * | 2012-10-26 | 2015-06-23 | Lg Innotek Co., Ltd. | Light emitting device package |
JP2016079351A (ja) * | 2014-10-22 | 2016-05-16 | 株式会社デンソー | 複合蓄熱材 |
KR102494710B1 (ko) * | 2015-09-04 | 2023-02-02 | 한국전기연구원 | 스마트 인슐레이션을 구비하는 고온 초전도 코일, 그에 사용되는 고온 초전도 선재 및 그 제조방법 |
RU2637260C2 (ru) * | 2015-12-09 | 2017-12-01 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Московский технологический университет " | Керамический материал для варисторов |
Citations (2)
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JPH06151105A (ja) * | 1992-11-11 | 1994-05-31 | Fujishima Akira | Ptc抵抗体の製造方法 |
JPH1116705A (ja) * | 1997-06-19 | 1999-01-22 | Fuji Electric Co Ltd | 限流素子 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
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US4009482A (en) * | 1973-09-26 | 1977-02-22 | Mitsubishi Denki Kabushiki Kaisha | Semiconductor thermally sensitive switch structure |
US4238812A (en) | 1978-12-01 | 1980-12-09 | Raychem Corporation | Circuit protection devices comprising PTC elements |
JPS6295805A (ja) * | 1985-10-22 | 1987-05-02 | 株式会社村田製作所 | サ−ミスタ |
JPH0658821A (ja) | 1992-08-06 | 1994-03-04 | Nec Corp | 温度センサー |
JPH09180908A (ja) * | 1995-10-27 | 1997-07-11 | Murata Mfg Co Ltd | 積層複合セラミックとそれを用いた積層複合セラミック素子ならびにそれを用いた高周波用電気回路 |
JPH10106806A (ja) | 1996-10-01 | 1998-04-24 | Fuji Electric Co Ltd | Ptc抵抗体およびその製造方法 |
US6337991B1 (en) * | 1996-11-05 | 2002-01-08 | Corning Applied Technologies Corp. | Large temperature coefficient of resistance material |
JPH10340801A (ja) | 1997-06-10 | 1998-12-22 | Fuji Electric Co Ltd | Ptc抵抗体 |
JP3080093B2 (ja) * | 1998-09-01 | 2000-08-21 | 日本電気株式会社 | ボロメータ用酸化物薄膜および該酸化物薄膜を用いた赤外線センサ |
JP2000100603A (ja) | 1998-09-25 | 2000-04-07 | Mitsubishi Electric Corp | Ptc抵抗体の製造方法およびそれを含む開閉器 |
JP4480583B2 (ja) * | 2002-11-26 | 2010-06-16 | 三菱電機株式会社 | 車両用交流発電機の制御装置 |
US7078259B2 (en) * | 2004-01-08 | 2006-07-18 | International Business Machines Corporation | Method for integrating thermistor |
-
2004
- 2004-03-19 JP JP2004079818A patent/JP2005268578A/ja active Pending
-
2005
- 2005-03-17 US US10/594,341 patent/US7709922B2/en not_active Expired - Fee Related
- 2005-03-17 WO PCT/JP2005/004791 patent/WO2005091311A1/ja active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH06151105A (ja) * | 1992-11-11 | 1994-05-31 | Fujishima Akira | Ptc抵抗体の製造方法 |
JPH1116705A (ja) * | 1997-06-19 | 1999-01-22 | Fuji Electric Co Ltd | 限流素子 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012186471A (ja) * | 2011-03-03 | 2012-09-27 | Samsung Electronics Co Ltd | 電気エネルギー発生装置 |
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JP2005268578A (ja) | 2005-09-29 |
US20070262408A1 (en) | 2007-11-15 |
US7709922B2 (en) | 2010-05-04 |
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