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The detection of magnetic resonance via the photovoltage (PDMR) is a sensitive method for investigating recombination and light-induced meta-stable defects in a-Si:H solar cells. The steady-state PDMR signals are dependent on the light intensity, microwave power and sample temperature. Particularly,the delay time of signal or the phase shift of lock-in amplifier is also dependent on the light intensity and temperature. For a given temperature and microwave power there is an optimum light intensity for the signal noise ratio. According to our results, a brief analysis and discussion are given.
The detection of magnetic resonance via the photovoltage (PDMR) is a sensitive method for investigating recombination and light-induced meta-stable defects in a-Si: H solar cells. The steady-state PDMR signals are dependent on the light intensity, microwave power Particularly, the delay time of signal or the phase shift of lock-in amplifier is also dependent on the light intensity and temperature. For a given temperature and microwave power there is an optimum light intensity for the signal noise ratio. to our results, a brief analysis and discussion are given.