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Injection deep level transient spectroscopy: An improved method for measuring capture rates of hot carriers in semiconductors
- Source :
- Journal of Applied Physics. 118:015703
- Publication Year :
- 2015
- Publisher :
- AIP Publishing, 2015.
-
Abstract
- An improved method for measuring the cross sections for carrier trapping at defects in semiconductors is described. This method, a variation of deep level transient spectroscopy (DLTS) used with bipolar transistors, is applied to hot carrier trapping at vacancy-oxygen, carbon-oxygen, and three charge states of divacancy centers (V2) in n- and p-type silicon. Unlike standard DLTS, we fill traps by injecting carriers into the depletion region of a bipolar transistor diode using a pulse of forward bias current applied to the adjacent diode. We show that this technique is capable of accurately measuring a wide range of capture cross sections at varying electric fields due to the control of the carrier density it provides. Because this technique can be applied to a variety of carrier energy distributions, it should be valuable in modeling the effect of radiation-induced generation-recombination currents in bipolar devices.
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 118
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........1b08716434522679f8d1e72c5049fe4c