Zinc Oxide Nanoparticle Photodetector

Abstract EN

A zinc oxide (ZnO) nanoparticle photodetector was fabricated using a simple method.

Under a 5 V applied bias, its dark current and photocurrent were 1.98×10-8 and 9.42×10-7 A, respectively.

In other words, a photocurrent-to-dark-current contrast ratio of 48 was obtained.

Under incident light at a wavelength of 375 nm and a 5 V applied bias, the detector’s measured responsivity was 3.75 A/W.

The transient time constants measured during the turn-ON and turn-OFF states were τON=204 s and τOFF=486 s, respectively.