Patent ID: 9329223
Filing Date: 2016-05-03
CPC Classification: G01R

Claim Text:
1. A method for detecting surface and bulk deep states in semiconductor materials, said method comprising: setting a switch of a switching device of a detection circuit of charge based deep level transient spectrometer to one of a closed position to configure the detection circuit in a parallel mode, wherein the the detection circuit is configured to test a first type of semiconductor material, and an open position to configure the detection circuit in a series mode, wherein the the detection circuit is configured to test a first type of semiconductor material, inputting, via a user interface of the detection circuit user defined inputs, the user defined inputs comprising: inputting to the device under test, via a data acquition module of the detection circuit, excitation voltage pulses based on the input user defined inputs and the switch setting, and via execution of an analog-to-digital conversion and timing program by a control system of the charge based deep level transient spectrometer; sampling, via the data acquistion module, digitized voltage charge outputs of the device under test generated in response to the input excitation voltage pulses, based on the user inputs and via execution of the analog-to-digital conversion and timing program by the control system; and obtaining at least one of a trap density, a trap emission rate, and a trap activation energy for deep level transients of the device under test based on the digitized voltage charge outputs via execution of a Q-DLTS data analysis program by the control system.