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Constant Photocurrent Method System

모델명 : SGA-25
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SGA-25

 

CPM Subgap Optical Absorption System

 

Measurementmethod: Constant Photocurrent Method (CPM )

Monochoromatic light irradiates the sample while inorder to keep photo current constant, light intensity is controlled. With thevalue of irradiation intensity, absorption coefficient can be obtained.

 

 

■ Structure of band gap of semiconductor thin films andvarious photoconductive materials can be analyzed.


■ The system offers very widerdynamic range of absorption coefficient such as 6 orders of magnitude.

 

■ Real time control of the light intensity generatesexcellent reproducible data.