IMAGE FROM THE BERKELEY LAB CCD
APPLICATIONS OF TECHNOLOGY:
- Small pixel, scientific CCDs where good point spread function (PSF) is required
- High quantum efficiency direct detection of 20 kV x-rays
- Space-based imaging where reliability is of prime importance
- Can be operated dependably at high substrate bias voltages, enabling full depletion of substrates up to 660 µm thick in addition to good spatial resolution
- Demonstrates greater radiation hardness with respect to displacement damage than conventional n-channel CCDs
Steve Holland of Berkeley Lab has invented a fully depleted charged-coupled device (CCD) that can operate reliably at high substrate bias voltages. This capability enables the use of substrates thick enough for direct x-ray detection and for thinner substrates achieves point spread functions low enough to meet the requirements of small pixel scientific applications. In addition, the Berkeley Lab CCD produces images with good spatial resolution without sacrificing the long-term reliability necessary for space applications.
Holland has produced images with good point spread function using a fully depleted CCD 660 µm thick. An independent testing group at NASA has verified that the Berkeley Lab CCD has greater radiation hardness with respect to displacement damage than conventional n-channel CCDs.
- Issued Patent # 7,271,468. Available for licensing or collaborative research
REFERENCE NUMBER: IB-2028
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