In addition to photoresponsivity, the normalized photocurrent-to-dark current ratio (NPDR), defined as responsivity divided by the dark current, is another important parameter that characterizes ...

In this work, the variance and the magnitude of a noise-dependent spectral bias are calculated as a function of the system responsivity (r) and the noise level in its estimate (sigma(r)). The ...

However, the weak optical absorption of graphene limits its photo-responsivity. To address this, graphene has been integrated into nanocavities, microcavities, and plasmon resonators; yet, these ...

The three methods are all based on differential spectral responsivity (DSR), which is a standard method to measure the spectral responsivity of photovoltaic detectors at a high-irradiance level.

The team's tests showed that their proof-of-concept photodiode outperformed not only existing germanium photodiodes but also ...

Researchers from the University of Illinois at Urbana-Champaign have demonstrated a new approach to modifying the light absorption and stretchability of atomically thin two-dimensional (2D ...

a, AFM image of 2D vermiculite. b, PFM amplitude map of 2D vermiculite. c, PFM phase map of 2D vermiculite. d. Comparison of electric field responsivity of 2D vermiculite LC and other media.

The team's tests showed that their proof-of-concept photodiode outperformed not only existing germanium photodiodes but also commercial indium gallium arsenide photodiodes in responsivity.

Researchers at Aalto University have developed an infrared photodiode that is 35 % more responsive at 1.55 µm, a key wavelength for telecommunications, compared to other germanium-based ...