Next Article in Journal
A New Position Measurement System Using a Motion-Capture Camera for Wind Tunnel Tests
Next Article in Special Issue
Identification and Quantification of Explosives in Nanolitre Solution Volumes by Raman Spectroscopy in Suspended Core Optical Fibers
Previous Article in Journal
Optimal Sensor Arrangements in Angle of Arrival (AoA) and Range Based Localization with Linear Sensor Arrays
Previous Article in Special Issue
Visible Light Communication System Using an Organic Bulk Heterojunction Photodetector
Article Menu

Export Article

Open AccessArticle
Sensors 2013, 13(9), 12295-12328; doi:10.3390/s130912295

Currents Induced by Injected Charge in Junction Detectors

Institute of Applied Research, Vilnius University, Sauletekio av. 9-III, LT-10223, Vilnius, Lithuania
Author to whom correspondence should be addressed.
Received: 25 July 2013 / Revised: 21 August 2013 / Accepted: 4 September 2013 / Published: 12 September 2013
(This article belongs to the Special Issue Photodetectors)
View Full-Text   |   Download PDF [907 KB, uploaded 21 June 2014]   |  


The problem of drifting charge-induced currents is considered in order to predict the pulsed operational characteristics in photo-and particle-detectors with a junction controlled active area. The direct analysis of the field changes induced by drifting charge in the abrupt junction devices with a plane-parallel geometry of finite area electrodes is presented. The problem is solved using the one-dimensional approach. The models of the formation of the induced pulsed currents have been analyzed for the regimes of partial and full depletion. The obtained solutions for the current density contain expressions of a velocity field dependence on the applied voltage, location of the injected surface charge domain and carrier capture parameters. The drift component of this current coincides with Ramo’s expression. It has been illustrated, that the synchronous action of carrier drift, trapping, generation and diffusion can lead to a vast variety of possible current pulse waveforms. Experimental illustrations of the current pulse variations determined by either the rather small or large carrier density within the photo-injected charge domain are presented, based on a study of Si detectors.
Keywords: photo-detectors; particle-detectors; Ramo’s current; injected charge drift current photo-detectors; particle-detectors; Ramo’s current; injected charge drift current
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Gaubas, E.; Ceponis, T.; Kalesinskas, V. Currents Induced by Injected Charge in Junction Detectors. Sensors 2013, 13, 12295-12328.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top