WO2000030975A1 - CRISTAL SiGe - Google Patents
CRISTAL SiGe Download PDFInfo
- Publication number
- WO2000030975A1 WO2000030975A1 PCT/JP1999/006168 JP9906168W WO0030975A1 WO 2000030975 A1 WO2000030975 A1 WO 2000030975A1 JP 9906168 W JP9906168 W JP 9906168W WO 0030975 A1 WO0030975 A1 WO 0030975A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- crystal
- value
- temperature
- range
- seebeck coefficient
- Prior art date
Links
- 239000013078 crystal Substances 0.000 title claims abstract description 76
- 229910000577 Silicon-germanium Inorganic materials 0.000 title abstract description 12
- 238000000034 method Methods 0.000 claims description 14
- 229910052785 arsenic Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 17
- 230000006866 deterioration Effects 0.000 abstract description 4
- 239000000203 mixture Substances 0.000 description 15
- 239000000523 sample Substances 0.000 description 14
- 239000002019 doping agent Substances 0.000 description 8
- 239000004065 semiconductor Substances 0.000 description 5
- 229910052732 germanium Inorganic materials 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229910002665 PbTe Inorganic materials 0.000 description 1
- 102000035195 Peptidases Human genes 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- 230000005678 Seebeck effect Effects 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000002772 conduction electron Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910021478 group 5 element Inorganic materials 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 235000019833 protease Nutrition 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- OCGWQDWYSQAFTO-UHFFFAOYSA-N tellanylidenelead Chemical compound [Pb]=[Te] OCGWQDWYSQAFTO-UHFFFAOYSA-N 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N10/00—Thermoelectric devices comprising a junction of dissimilar materials, i.e. devices exhibiting Seebeck or Peltier effects
- H10N10/80—Constructional details
- H10N10/85—Thermoelectric active materials
- H10N10/851—Thermoelectric active materials comprising inorganic compositions
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B15/00—Single-crystal growth by pulling from a melt, e.g. Czochralski method
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/52—Alloys
Definitions
- the present invention relates to a silicon germanium (SiGe) crystal suitably used as a thermoelectric element material and a thermoelectric element using the SiGe crystal.
- SiGe silicon germanium
- thermoelectric power is generated between the two locations due to the so-called Seebeck effect. I do.
- thermoelectric elements that apply this principle have no moving parts and have a simple structure.Therefore, there is a high possibility that a thermoelectric element with high reliability, a long service life, and easy maintenance can be used. . For this purpose, various thermoelectric element materials have been conventionally manufactured and developed.
- SiGe is known as a typical thermoelectric element material that is chemically stable, and many proposals have been made on the improvement of its performance and the manufacturing method [JP-A-6-11-1].
- No. 494553 U.S. Pat.No. 4,711,971; European Patent No. 1,849,499); Japanese Unexamined Patent Publication No. H8-56020; Patent No. 2623 No.172 publication etc.].
- the figure of merit Z which is an index of thermoelectric element performance, is given by the following equation (1).
- Figure 7 shows the figure of merit Z of various thermoelectric element materials in relation to temperature.
- the figure of merit ⁇ was inferior to Bi 2 Te 3 and PbTe of tellurium-based materials.
- ⁇ -type materials include B, A1, and Ga
- a group V element such as P, As, or Sb may be added as a dopant, or as disclosed in JP-A-61-14953 and JP-A-8-560.
- metals such as Pb, Sn, Fe, Ni, and Cr and silicides thereof.
- the constituents Si and Ge and dopants such as dopants are mixed and dissolved to form a composition as uniform as possible, followed by cooling.
- the resulting ingots are aggregates of crystal grains because the ingot method or the Prideman method or the mixture is manufactured by the powder sintering method.
- An object of the present invention is to provide a SiGe crystal material which is improved in the figure of merit as a thermoelectric element, is excellent in workability, and is free from characteristic deterioration and cracks during use. Disclosure of the invention
- the above-mentioned S x Ge, _ x (0 ⁇ x ⁇ 1) crystal is preferably formed by a pull-up method.
- the absolute value of the Seebeck coefficient of the Six Ge ⁇ (0 ⁇ x ⁇ 1) crystal is preferably in the range of 100 to 700 V / K.
- the thermal conductivity of the crystal value is preferably in the range of 1 ⁇ 2 0 W / m ⁇ K.
- the value of the electrical conductivity of the crystal is 1 0 1 ⁇ 10 5 / ⁇ ⁇ m.
- the absolute value of the Seebeck coefficient of the above Six Ge ⁇ (0 ⁇ x ⁇ 1) crystal is in the range of 100 to 700 V / K, and the thermal conductivity is 1 to 20 W / m. More preferably the values of range and the electric conductivity of K is in the range of 1 0 1 ⁇ 1 0 5 / ⁇ ⁇ ⁇ .
- the S i x G e, _ ⁇ (0 ⁇ ⁇ 1) in the crystal it is preferable that the value of X is 0.6 or more 0.8 or less.
- the crystal of S x Ge, —x (0 ⁇ x ⁇ 1) is a single crystal.
- Thermoelectric element of the present invention is characterized by using crystals of the above-mentioned S i x G e 1-x (0 ⁇ x ⁇ 1).
- FIG. 1 is a graph showing the relationship between the value of the thermal conductivity and the temperature of S x Ge, _ ⁇ crystals having different compositions.
- FIG. Figure 3 is a graph showing the change in electrical conductivity with respect to temperature of the S i x G ei _ x crystals.
- FIG. 4 is a graph showing changes in intrinsic electric conductivity and band gap energy of Six Ge ⁇ crystals at 600 ° C. depending on the composition.
- Figure 5 is a view to graphically change against temperature Seebeck coefficient S i x G ei _ x crystals.
- Figure 6 is a graph showing the dependence on the composition of the Seebeck coefficient in S i x G for e 1-x crystal 6 0 0 ° C.
- FIG. 7 is a graph showing the relationship between the performance index of various thermoelectric element materials and the temperature.
- Figure 8 is a graph showing the relationship between S i x G e ⁇ 6 0 0 ° peptidase one Beck coefficient and electric conductivity in the C crystal.
- Si, Ge and dopant are dissolved in a quartz crucible, and the Si single crystal is used as a seed crystal in an argon gas (1 atm) air flow of 1 to 10 mm / hr.
- the Si Ge crystal was pulled at the pulling speed.
- S i G e crystal was pulled up S i x G e, and varied between 0.9 9 the value of X in _ x from 0.0 1 seven crystals shown in Table 1 .
- Grain size of each crystal is 5 X 1 0 - 5 mm 3 or more (average grain size of about 5 0 ⁇ higher) it was.
- Ga was doped for the purpose of obtaining a P-type crystal. ; 1 raised Si Ge crystal
- the laser-flash method is a method in which the surface of a sample is irradiated with a laser instantaneously, and the thermal conductivity is evaluated by the temperature change on the back surface.
- Figure 2 is a typical example of the low-temperature side temperature and the upper temperature of the S i x G thermal resistance of ei _ x crystal (thermal conductivity reciprocal) junctions how the thus changes the value of X
- the four-probe method is a method in which a current is applied from two outer needles of four needles arranged in a straight line, and a potential difference generated between two inner needles is measured.
- FIG. 3 shows the change in electrical conductivity with temperature. In most samples, the electrical conductivity value increases exponentially with temperature above 100 ° C to 200 ° C.
- the Ga-added sample shows almost constant conductivity up to high temperatures. Addition of a higher concentration of Ga is expected to increase its conductivity up to high temperatures and keep it constant.
- FIG. 4 shows the change in intrinsic electrical conductivity at 600 ° C. depending on the composition. It can be seen that the electric conductivity is larger for the Ge rich. However, high electrical conductivity can be obtained even with Si richness by adding a high concentration of impurities. Dependence on band cap composition is also shown.
- the temperature difference method is a method of measuring the thermoelectromotive force generated on both contact surfaces of a sample sandwiched between thermal blocks having different temperatures.
- Figure 5 shows the change in Seebeck coefficient with temperature.
- the composition of a sample having a composition of 0.6 to 0.8 changes remarkably from a positive value (P-type semiconductor) to a negative value (N-type semiconductor or intrinsic semiconductor region), each having a large value. It increases monotonically in the sample added with Ga.
- FIG. 6 shows the dependence of the Seebeck coefficient on the composition at 600 ° C.
- a large absolute value is expected when the composition is around 0.8.
- the Seebeck coefficient becomes smaller as the concentration increases with respect to the Ga impurity concentration. Therefore, it is necessary to study the optimum concentration in practical use.
- a large Seebeck coefficient is expected because the difference in mobility between electrons and holes becomes small. I can't wait.
- Region is known to be preferable in order to obtain a high figure of merit Z, and a Si Ge crystal having this level of dopant concentration is a preferable material from a practical point of view.
- the average particle diameters of the polycrystals of Sample B and Sample D are about 50 m and about 200 m, respectively. Assuming that these particles are spherical, their volume is about 6.5 x 1 respectively. 0- 5 mm 3, approximately 4. 2 x 1 0- 3 mm 3 . Table 2
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Silicon Compounds (AREA)
- Compositions Of Oxide Ceramics (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000583811A JP3975676B2 (ja) | 1998-11-26 | 1999-11-05 | SiGe多結晶 |
DE69920662T DE69920662T2 (de) | 1998-11-26 | 1999-11-05 | Sibe-kristall |
EP99954399A EP1052222B1 (en) | 1998-11-26 | 1999-11-05 | SiGe CRYSTAL |
KR1020007007308A KR100654486B1 (ko) | 1998-11-26 | 1999-11-05 | SiGe 결정 |
US09/582,237 US6498288B1 (en) | 1998-11-26 | 1999-11-05 | Silicon germanium crystal |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP33589498 | 1998-11-26 | ||
JP10/335894 | 1998-11-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000030975A1 true WO2000030975A1 (fr) | 2000-06-02 |
Family
ID=18293571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/006168 WO2000030975A1 (fr) | 1998-11-26 | 1999-11-05 | CRISTAL SiGe |
Country Status (8)
Country | Link |
---|---|
US (1) | US6498288B1 (ja) |
EP (1) | EP1052222B1 (ja) |
JP (1) | JP3975676B2 (ja) |
KR (1) | KR100654486B1 (ja) |
CN (1) | CN1130308C (ja) |
DE (1) | DE69920662T2 (ja) |
RU (1) | RU2206643C2 (ja) |
WO (1) | WO2000030975A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021002221A1 (ja) * | 2019-07-03 | 2021-01-07 | 住友電気工業株式会社 | 熱電変換材料、熱電変換素子、熱電変換モジュールおよび光センサ |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002094131A (ja) * | 2000-09-13 | 2002-03-29 | Sumitomo Special Metals Co Ltd | 熱電変換素子 |
CN100459202C (zh) * | 2007-07-02 | 2009-02-04 | 北京科技大学 | 一种硅锗系热电材料的制备方法 |
RU2739887C1 (ru) * | 2020-05-06 | 2020-12-29 | Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский Нижегородский государственный университет им. Н.И. Лобачевского" | СПОСОБ ПОЛУЧЕНИЯ ТЕРМОЭЛЕКТРИЧЕСКОГО МАТЕРИАЛА n-ТИПА ПРОВОДИМОСТИ НА ОСНОВЕ ТВЕРДОГО РАСТВОРА Gex-δSi1-xSbδ ПРИ х=0,26-0,36, δ=0,008-0,01 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04285096A (ja) * | 1991-03-12 | 1992-10-09 | Nec Corp | Si−Ge単結晶育成法 |
JPH0624893A (ja) * | 1992-07-07 | 1994-02-01 | Tokuzo Sukegawa | 半導体結晶の製造方法および装置 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8431071D0 (en) * | 1984-12-08 | 1985-01-16 | Univ Glasgow | Alloys |
JP2686928B2 (ja) * | 1985-08-26 | 1997-12-08 | アンリツ株式会社 | シリコン・ゲルマニウム混晶薄膜導電体 |
JPH07321323A (ja) * | 1994-05-24 | 1995-12-08 | Matsushita Electric Ind Co Ltd | 薄膜トランジスタおよびその製造方法 |
-
1999
- 1999-11-05 RU RU2000122450/12A patent/RU2206643C2/ru not_active IP Right Cessation
- 1999-11-05 KR KR1020007007308A patent/KR100654486B1/ko not_active IP Right Cessation
- 1999-11-05 US US09/582,237 patent/US6498288B1/en not_active Expired - Fee Related
- 1999-11-05 EP EP99954399A patent/EP1052222B1/en not_active Expired - Lifetime
- 1999-11-05 WO PCT/JP1999/006168 patent/WO2000030975A1/ja active IP Right Grant
- 1999-11-05 DE DE69920662T patent/DE69920662T2/de not_active Expired - Fee Related
- 1999-11-05 JP JP2000583811A patent/JP3975676B2/ja not_active Expired - Lifetime
- 1999-11-05 CN CN99802262A patent/CN1130308C/zh not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04285096A (ja) * | 1991-03-12 | 1992-10-09 | Nec Corp | Si−Ge単結晶育成法 |
JPH0624893A (ja) * | 1992-07-07 | 1994-02-01 | Tokuzo Sukegawa | 半導体結晶の製造方法および装置 |
Non-Patent Citations (4)
Title |
---|
ED.: Y. MUTO: "New Chemistry VIII - Semiconductor and Pure Metals (in japanese)", KYORITSU SHUPPAN, 10 August 1963 (1963-08-10), pages 25, XP002932127 * |
K. ISHIGO ET AL.: "Development of Single Crystal; Ge(1-x)-Si(x) (in Japanese)", TRANSACTION OF JAPAN CRYSTAL SOCIETY,, vol. 19, no. 1, 1 July 1992 (1992-07-01), pages 72, XP002932126 * |
See also references of EP1052222A4 * |
T. SUMITANI ET AL.: "Evaluation of Single Crystal; Ge(1-x)Six using X-ray Topography (in Japanese)", TRANSACTION OF JAPAN CRYSTAL SOCIETY,, vol. 19, no. 1, 1 July 1992 (1992-07-01), pages 34, XP002932125 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021002221A1 (ja) * | 2019-07-03 | 2021-01-07 | 住友電気工業株式会社 | 熱電変換材料、熱電変換素子、熱電変換モジュールおよび光センサ |
JPWO2021002221A1 (ja) * | 2019-07-03 | 2021-01-07 | ||
JP7476191B2 (ja) | 2019-07-03 | 2024-04-30 | 住友電気工業株式会社 | 熱電変換材料、熱電変換素子、熱電変換モジュールおよび光センサ |
US12029127B2 (en) | 2019-07-03 | 2024-07-02 | Sumitomo Electric Industries, Ltd. | Thermoelectric conversion material, thermoelectric conversion element, thermoelectric conversion module, and light sensor |
Also Published As
Publication number | Publication date |
---|---|
EP1052222B1 (en) | 2004-09-29 |
EP1052222A4 (en) | 2002-02-13 |
JP3975676B2 (ja) | 2007-09-12 |
KR20010033781A (ko) | 2001-04-25 |
US6498288B1 (en) | 2002-12-24 |
DE69920662T2 (de) | 2005-02-10 |
CN1130308C (zh) | 2003-12-10 |
RU2206643C2 (ru) | 2003-06-20 |
DE69920662D1 (de) | 2004-11-04 |
EP1052222A1 (en) | 2000-11-15 |
CN1288443A (zh) | 2001-03-21 |
KR100654486B1 (ko) | 2006-12-05 |
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