SU120673A1 - Method for determining the type of conductivity in Germany - Google Patents
Method for determining the type of conductivity in GermanyInfo
- Publication number
- SU120673A1 SU120673A1 SU605309A SU605309A SU120673A1 SU 120673 A1 SU120673 A1 SU 120673A1 SU 605309 A SU605309 A SU 605309A SU 605309 A SU605309 A SU 605309A SU 120673 A1 SU120673 A1 SU 120673A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- conductivity
- determining
- type
- germany
- germanium
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Description
Изобретение относитс к способам определени типа проводимост1г монокристаллического германи по знаку термоэлектродвижущей силы при помощи термозонда.The invention relates to methods for determining the type of conductance of monocrystalline germanium by the sign of a thermoelectromotive force using a thermal probe.
Известные подобные способы, основанные на использовании нагретого термозонда, не обеспечивают необходимой точности определени при исследовании образцов, проводимость которых близка к собственной проводимости германи .The known similar methods, based on the use of a heated thermal probe, do not provide the necessary accuracy of determination in the study of samples whose conductivity is close to the intrinsic conductivity of germanium.
Дл устранени этого недостатка предлагаетс вместо нагретого зонда использовать охлажденный термозонд. Охлаждение термозонда может быть осуществлено холодильным термоэлементом, льдом, жидкими газами, например азотом, и другими известными способами. При охлаждении зонда в точке измерени концентраци носителей, обусловленных собственной проводимостью, резко уменьшаетс и знак термоэлектродвижущей силы определ етс только примесной проводимостью . При использовании охлажденного зонда можно задавать больщий градиент температуры. Кроме того, удельна термоэлектродвижуща сила образцов, проводимость которых близка к собственной проводимости германи , возрастает при охлаждении. Все это повыщает точность измерений и позвол ет четко и безошибочно определ ть наличие избытка концентрации доноров или акцепторов в слитках германи .To eliminate this drawback, it is proposed to use a cooled thermal probe instead of a heated probe. The cooling of the thermal probe can be carried out by a refrigerating thermoelement, ice, liquid gases, for example nitrogen, and other known methods. When the probe is cooled at the point of measurement, the concentration of carriers due to intrinsic conductivity decreases sharply and the sign of thermoelectromotive force is determined only by impurity conductivity. When using a cooled probe, a large temperature gradient can be set. In addition, the specific thermoelectromotive force of samples whose conductivity is close to the intrinsic conductivity of germanium increases with cooling. All this increases the accuracy of measurements and makes it possible to accurately and accurately determine the presence of an excess concentration of donors or acceptors in germanium ingots.
Предлагаемый способ может быть использован дл контрол технологического процесса при производстве чистого германи .The proposed method can be used to control the technological process in the production of pure germanium.
Предмет изобретени Subject invention
Способ определени типа проводимости германи термозондом по знаку электродвижущей силы, отличающийс тем, что, с целью иовыщени точности измерени , примен ют охлажденный термозонд, вместо нагретого, причем охлаждение его осуществл ют холодильным термоэлементом, сухим льдом, жидкими газами или другими известными приемами.The method of determining the type of germanium conductivity by using a thermal probe according to the sign of an electromotive force, characterized in that, in order to improve the measurement accuracy, a cooled thermal probe is used instead of heated, and it is cooled by a refrigeration thermoelement, dry ice, liquid gases or other known techniques.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU605309A SU120673A1 (en) | 1958-08-01 | 1958-08-01 | Method for determining the type of conductivity in Germany |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU605309A SU120673A1 (en) | 1958-08-01 | 1958-08-01 | Method for determining the type of conductivity in Germany |
Publications (1)
Publication Number | Publication Date |
---|---|
SU120673A1 true SU120673A1 (en) | 1958-11-30 |
Family
ID=48392522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU605309A SU120673A1 (en) | 1958-08-01 | 1958-08-01 | Method for determining the type of conductivity in Germany |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU120673A1 (en) |
-
1958
- 1958-08-01 SU SU605309A patent/SU120673A1/en active
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