GB961573A - An arrangement for measuring carrier lifetimes of a semi-conductor material - Google Patents
An arrangement for measuring carrier lifetimes of a semi-conductor materialInfo
- Publication number
- GB961573A GB961573A GB35375/61A GB3537561A GB961573A GB 961573 A GB961573 A GB 961573A GB 35375/61 A GB35375/61 A GB 35375/61A GB 3537561 A GB3537561 A GB 3537561A GB 961573 A GB961573 A GB 961573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- semi
- conductor material
- carrier life
- sept
- specimen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/26—Testing of individual semiconductor devices
- G01R31/2607—Circuits therefor
- G01R31/2637—Circuits therefor for testing other individual devices
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
961,573. Testing semi-conductors. SIEMENS -SCHUCKERTWERKE A.G. Sept. 29,1961 [Sept. 30, 1960], No. 35375/61. Headings G1A and G1U. A method of measuring the carrier life times in a semi-conductor material, comprises placing a specimen 1 of the semi-conductor material between a pair of spaced apart electrical terminals 2 and 3 connected to a first electrical circuit, such that an electrical current flows through the semiconductor material, directing first (15a) and second (15b) beams of light on to the piece of semi-conductor material and a photo-electric device 16, connected in a second electrical circuit, respectively, such as to influence the conductivity of the semiconductor material and produce sinusoidally varying voltage in each circuit, and applying the said two voltages to a phase comparing device 8 which converts the phase difference between the two voltages into a directly displayed indication of the required carrier life time. A single beam of light 15 may be used, sinusoidally modulated by a toothed disc 12 and split by semi-transparent reflector 14, or separate beams may be employed, using separate parts of the periphery of the toothed disc for modulation, Fig. 2, (not shown). High frequency A-C may be sent though the piece of semi-conductor material via capacitive terminals Fig. 3 (not shown). The carrier life time may be displayed on a suitably calibrated meter or, where various parts of the specimen are to be investigated, may be continuously displayed on a recorder.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DES0070741 | 1960-09-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB961573A true GB961573A (en) | 1964-06-24 |
Family
ID=7502002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB35375/61A Expired GB961573A (en) | 1960-09-30 | 1961-09-29 | An arrangement for measuring carrier lifetimes of a semi-conductor material |
Country Status (2)
| Country | Link |
|---|---|
| CH (1) | CH401258A (en) |
| GB (1) | GB961573A (en) |
-
1961
- 1961-08-25 CH CH991961A patent/CH401258A/en unknown
- 1961-09-29 GB GB35375/61A patent/GB961573A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH401258A (en) | 1965-10-31 |
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