Close

Search

Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
share
Email Facebook Twitter Google+ LinkedIn

Light Probes Wafers Nondestructively

EuroPhotonics
Sep 2008
PicoQuant GmbHRequest Info
 
•    decay down to 10 ps
•    laser or LED excitation source
•    wafers up to 10 cm

PicoQuant_Wafercheck-2a_NPR.jpgPicoQuant GmbH has a new version of its WaferCheck 150 that characterizes semiconductor materials for research and production purposes. It uses a nondestructive noncontact light probe to measure the time response of optoelectronic devices and performs quality checks on semiconductor processes and products, including photodetectors, GaAs/GaN wafers and solar cells, laser diodes and bright LEDs.

The instrument uses time-resolved photoluminescence to measure the electron-hole recombination rate of the semiconductor material. It works on raw materials, devices and structures. Pulsed light excites the electrons, and a photomultiplier tube (PMT) or multichannel plate (MCP) PMT detector measures the decay characteristics of the resulting fluorescence by time-correlated single-photon counting. The PMT detects decay times down to 60 ps, while the MCP-PMT detects down to 10 ps. An integrated laser power meter provides real-time control of the excitation level, and high-quality filters select the appropriate part of the emission spectrum. The light source is a laser diode head emitting 60- to 500-ps pulses at 375 to 485 nm, at 532 nm, or at 635 to 800 nm, with a repetition rate of up to 40 MHz, or pulsed LEDs emitting 0.5- to 1-ns pulses at 260 to 600 nm. A NanoHarp 250 or PicoHarp 300 data acquisition board logs the results, and FluoFit data analysis software computes exponential decay, lifetime distribution and anisotropy.

The standard instrument measures 300 × 375 × 150 mm and takes wafers up to 10 cm in size, but other sizes are available on request. The software is compatible with Microsoft Windows 2000 and XP.


REQUEST INFO ABOUT THIS PRODUCT

* Message:
(requirements, questions for supplier)
Your contact information
* First Name:
* Last Name:
* Email Address:
* Company:
Address:
Address 2:
City:
State/Province:
Postal Code:
* Country:
Phone #:
Fax #:

Register or login to auto-populate this form:
Login Register
* Required
Photonics Buyers' Guide
Looking for Semiconductor Materials? There are 48 companies listed in the Photonics Buyers' Guide.
Browse Cameras & Imaging, Lasers, Optical Components, Test & Measurement, and more.
energyEuropenoncontact light probePicoQuant GmbHProduct Previewsemiconductor materialsSensors & Detectors

Terms & Conditions Privacy Policy About Us Contact Us
back to top

Facebook Twitter Instagram LinkedIn YouTube RSS
©2017 Photonics Media
x Subscribe to EuroPhotonics magazine - FREE!
X
Are you interested in this product?
If you'd like PicoQuant GmbH to reach out to you with more information about this product, please supply your email and they will contact you.

Email Address:
Stop showing me this for the remainder of my visit