Related Experiment Video
Updated: Jun 19, 2026

Recombination Dynamics in Thin-film Photovoltaic Materials via Time-resolved Microwave Conductivity
Published on: March 6, 2017
Transient photocurrents in photoconductive semiconductors generated by step-phase modulations
Abstract:
Transient photocurrents generated in photoconductive semiconductors by two coherently interfering optical fields in two-wave mixing experiments were observed when the signal beam was phase modulated by a step signal. Expressions describing the behavior of the transient photocurrent were derived and verified experimentally. Such transient photocurrents are insensitive to the static carrier phase differences between the two optical fields and can be used to detect sudden phase variations between two interfering optical fields.
Related Concept Videos
Photoelectric Effect
Carrier Generation and Recombination
This process is given by the generation rate G and is efficient due to the conservation of momentum between the valence band maximum and conduction band minimum.
Indirect generation involves an...
P-N junction
Switching of BJT
Cut-off Mode ("Off" State): In this state, both the emitter-base and collector-base junctions are reverse-biased. The...
Photochemical Electrocyclic Reactions: Stereochemistry
Selection Rules: Photochemical Activation

