Letter

Science China Physics, Mechanics & Astronomy

, Volume 57, Issue 6, pp 1206-1208

Double-peaked decay of transient photovoltage in nanoporous ZnO/n-Si photodetector

  • Hao LiuAffiliated withState Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumKey Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF)
  • , Cheng FuAffiliated withKey Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF)
  • , Kun ZhaoAffiliated withState Key Laboratory of Petroleum Resources and Prospecting, China University of PetroleumKey Laboratory of Oil and Gas Terahertz Spectroscopy and Photoelectric Detection, China Petroleum and Chemical Industry Federation (CPCIF) Email author 

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

In the present work, a nanoporous ZnO/n-Si structure has been proposed as a new type infrared photodetector. Triggered by one laser pulse with wavelength of 1064 nm, this structure exhibits a double-peak decay of transient photovoltage. Also, the time interval between these two peaks increases linearly with the increase of irradiated pulsed energy, indicating the promising application of this hetero-junction in photo-energy detection of infrared pulsed laser. A possible mechanism for this particular photoresponse has been discussed.

Keywords

ZnO sol-gel photovoltage photodetector