SU814055A1 - METHOD FOR DETERMINING THE TIME OF EMITTING RECOMBINATION OF A LED - Google Patents
METHOD FOR DETERMINING THE TIME OF EMITTING RECOMBINATION OF A LEDInfo
- Publication number
- SU814055A1 SU814055A1 SU2694615/25A SU2694615A SU814055A1 SU 814055 A1 SU814055 A1 SU 814055A1 SU 2694615/25 A SU2694615/25 A SU 2694615/25A SU 2694615 A SU2694615 A SU 2694615A SU 814055 A1 SU814055 A1 SU 814055A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- led
- current
- determining
- radiative recombination
- recombination time
- Prior art date
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
Способ определения времени излучательной рекомбинации светодиода с одновременным измерением интенсивности излучения, включающий возбуждение светодиода и проекцию выбранного участка излучающей поверхности на фотоприемник, отличающийся тем, что, с целью расширения диапазона в области малых времен релаксации, световой поток, идущий от светодиода, перекрывают и измеряют высокочастотный ток, проходящий через светодиод, затем, постепенно увеличивая световой поток, измеряют минимальное значение этого тока и по отношению минимального тока к первоначальному току светодиода находят время излучательной рекомбинации светодиода по формулеarctg2πωτ = arcsinN,где ω - частота возбуждения светодиода;N - отношение показаний измерительного прибора;τ - время излучательной рекомбинации светодиода.The method of determining the radiative recombination time of the LED with simultaneous measurement of the radiation intensity, including the excitation of the LED and the projection of a selected portion of the radiating surface on the photodetector, characterized in that, in order to extend the range in the region of short relaxation times, the luminous flux coming from the LED overlaps and measures the high-frequency the current passing through the LED, then gradually increasing the luminous flux, measure the minimum value of this current and the ratio of the minimum current the initial LED current is found by the radiative recombination time of the LED according to the formula arctg2πωτ = arcsinN, where ω is the excitation frequency of the LED, N is the ratio of the readings of the measuring device, and τ is the radiative recombination time of the LED.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2694615/25A SU814055A1 (en) | 1978-12-11 | 1978-12-11 | METHOD FOR DETERMINING THE TIME OF EMITTING RECOMBINATION OF A LED |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU2694615/25A SU814055A1 (en) | 1978-12-11 | 1978-12-11 | METHOD FOR DETERMINING THE TIME OF EMITTING RECOMBINATION OF A LED |
Publications (1)
Publication Number | Publication Date |
---|---|
SU814055A1 true SU814055A1 (en) | 2000-05-20 |
Family
ID=60523553
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU2694615/25A SU814055A1 (en) | 1978-12-11 | 1978-12-11 | METHOD FOR DETERMINING THE TIME OF EMITTING RECOMBINATION OF A LED |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU814055A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2523731C1 (en) * | 2013-02-05 | 2014-07-20 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Method and apparatus for measuring transient thermal characteristics of light-emitting diodes |
-
1978
- 1978-12-11 SU SU2694615/25A patent/SU814055A1/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2523731C1 (en) * | 2013-02-05 | 2014-07-20 | Федеральное государственное бюджетное учреждение науки Институт радиотехники и электроники им. В.А. Котельникова Российской академии наук | Method and apparatus for measuring transient thermal characteristics of light-emitting diodes |
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