SU1500911A1 - Method of determining energy of ionization of the surface condition - Google Patents
Method of determining energy of ionization of the surface condition Download PDFInfo
- Publication number
- SU1500911A1 SU1500911A1 SU874321124A SU4321124A SU1500911A1 SU 1500911 A1 SU1500911 A1 SU 1500911A1 SU 874321124 A SU874321124 A SU 874321124A SU 4321124 A SU4321124 A SU 4321124A SU 1500911 A1 SU1500911 A1 SU 1500911A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- potential
- current
- determining
- occurrence
- ionization energy
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 238000005259 measurement Methods 0.000 claims abstract description 3
- 230000001052 transient effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
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- Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
Abstract
Изобретение относитс к экспрессному контролю качества поверхностного состо ни твердых тел и позвол ет повысить точность определени энергии ионизации и сократить врем измерени тех же параметров. Дл этого измер ют вольт-амперные характеристики при двух различных скорост х развертки, обеспечивающих регистрацию максимума нестационарного разр дного тока, регистрируют потенциал по влени максимумов тока, определ ют энергию ионизации поверхностного состо ни по формуле EI = E/ϕп.з.-(ϕ1V2-ϕ2V1)/(V2-V1)/ где E -зар д электронаThe invention relates to express control of the quality of the surface state of solids and makes it possible to improve the accuracy of determining the ionization energy and reduce the measurement time of the same parameters. For this, the current-voltage characteristics are measured at two different sweep rates, which ensure the detection of the maximum of the non-stationary discharge current, the potential of the current maximum occurrence is determined, the ionization energy of the surface state is determined by the formula E I = E / ϕ p. - (ϕ 1 V 2 -ϕ 2 V 1 ) / (V 2 -V 1 ) / where E is a charge of an electron
ϕп.з. - потенциал плоских зонϕ p.z. - potential of flat zones
ϕ1, ϕ2 - потенциалы по влени максимумов нестационарного токаϕ 1 , ϕ 2 - potentials of the occurrence of the unsteady current maxima
V1, V2 - значени скоростей развертки потенциалов. 1 ил.V 1 , V 2 - values of the potential sweep rates. 1 il.
Description
Изобретение относитс к электронной технике, а точнее к способам экспрессного контрол качества поверхности твердых тел.The invention relates to electronic engineering, and more specifically to methods for express quality control of the surface of solids.
Цель изобретени - повышение точности определени энергии ионизации и сокращение времени измерени энергии ионизации поверхностных состо ний .The purpose of the invention is to improve the accuracy of determining the ionization energy and shorten the measurement time of the ionization energy of surface states.
На чертеже представлена блок-схема устройства дл осуществлени предлагаемого способа.The drawing shows a block diagram of an apparatus for carrying out the proposed method.
Устройство содержит исследуемьш образец 1, электрод 2 сравнени .The device contains test sample 1, reference electrode 2.
вспомогательный платиновый электрод 3, электрохимическую измерительную чейку с электролитом 4, потенциостат 5, позвол ющий поддерживать потенциал посто нным или изменить его по заданной скорости в зависимости от времени по линейному закону, регистрирукхций двухкоординальный потенциометр 6, миллиамп-ерметр 7.an auxiliary platinum electrode 3, an electrochemical measuring cell with electrolyte 4, a potentiostat 5 that allows you to maintain the potential constant or change it at a given speed depending on time linearly, registered a two-standard potentiometer 6, milliamp-meter 7.
Способ осуществл ют следующим образом .The method is carried out as follows.
Исследуемое твердое тело, например окись Цинка, помещают в электрохимическую чейку 4с 1 н. NaOH элек01 ОThe test solid, for example, Zinc oxide, is placed in an electrochemical cell 4c 1 n. NaOH elek01 O
о соabout with
31500913150091
тролитом в режиме разомкнутой цепи на потенциостате 5 устанавливают начальное значение исходного потенцика потенциала. Затем потенциостат перевод т в режим замкнутой цепи и на вольтметре 7 фиксируют установившеес стационарное значение тока чейки. Скорость развертки потенциалов выбирают с учетом возможности регистрации максимума нестационарного тока. Зависимость тока от потенциала записывают двухкоординатньм потенциометром 6 при двух различныхthe trolley in open-circuit mode on potentiostat 5 sets the initial value of the initial potential of the potential. Then the potentiostat is switched to the closed circuit mode and a steady-state value of the cell current is recorded on a voltmeter 7. The potential sweep speed is chosen taking into account the possibility of recording the maximum of a non-stationary current. The dependence of the current on the potential is recorded by a two-coordinate potentiometer 6 with two different
скорост х V и V и фиксируют потенциалы (j тл по влени максимума тока, по которым с помощью формулы рассчитывают Е - энергию ионизации.speeds V and V and fix the potentials (j t of the occurrence of the maximum current, which are used to calculate E - ionization energy using the formula.
Изобретение позвол ет проводить неразрущающий контроль качества поверхности твердых тел.The invention allows non-destructive quality control of the surface of solids.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874321124A SU1500911A1 (en) | 1987-10-27 | 1987-10-27 | Method of determining energy of ionization of the surface condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU874321124A SU1500911A1 (en) | 1987-10-27 | 1987-10-27 | Method of determining energy of ionization of the surface condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1500911A1 true SU1500911A1 (en) | 1989-08-15 |
Family
ID=21333530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU874321124A SU1500911A1 (en) | 1987-10-27 | 1987-10-27 | Method of determining energy of ionization of the surface condition |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1500911A1 (en) |
-
1987
- 1987-10-27 SU SU874321124A patent/SU1500911A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Панос н Ж.Р. и др. Некоторые особенности генерационно-рекомбина- ционньк процессов на переходе полупроводник - электролит,- Физика и техника полупроводников. 1982, № 7, с. 1298-1301. Панос н Ж.Р. и др. Исследование поверхностных состо ний на границе раздела полупроводников ZnO, TiO с электролитом. Поверхность. Физика, хими , механика. 1986, № 2, с. 93-99. * |
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