Jump to content


Photo

Another potentially groundbreaking image sensor?

  • Please log in to reply
13 replies to this topic

#1 chasing photons

chasing photons

    Vostok 1

  • -----
  • Posts: 130
  • Joined: 19 Mar 2013
  • Loc: Minnesota

Posted 22 June 2013 - 02:36 PM

Could molybdenite eventually become the foundation for an image sensor that is five times more sensitive than currently available silicon-based sensors?

http://www.scienceda...30612133101.htm

#2 nytecam

nytecam

    Voyager 1

  • *****
  • Posts: 11462
  • Joined: 20 Aug 2005
  • Loc: London UK

Posted 22 June 2013 - 03:12 PM

Sounds great - so x5 current CCDs with 50% QE equals 250% QE - WOW :roflmao:

#3 Zoomster

Zoomster

    Vendor - Clear Sky Adventures

  • *****
  • Vendors
  • Posts: 1098
  • Joined: 30 Jan 2005
  • Loc: Tampa FL

Posted 23 June 2013 - 08:35 AM

Um, yeah, I want one!

#4 Dragon Man

Dragon Man

    Vanguard

  • *****
  • Posts: 2058
  • Joined: 07 Mar 2006
  • Loc: Snake Valley, Australia

Posted 23 June 2013 - 09:03 AM

Someone has to volunteer to buy one and test it for us.

Mark? :lol:

#5 PEterW

PEterW

    Viking 1

  • -----
  • Posts: 770
  • Joined: 02 Jan 2006
  • Loc: SW London, UK

Posted 23 June 2013 - 12:49 PM

MoS2 another 2D material like Graphene. Lots of work on both ongoing, time will tell what they end up being used for. I understand that MoS2 might also be a useful gas sensor.

Cheers

PeterW

#6 CuriousOne

CuriousOne

    Explorer 1

  • -----
  • Posts: 54
  • Joined: 22 Jan 2013

Posted 24 June 2013 - 12:18 AM

Plumbum Sulphide, Indium Antimonide offer far better sensitivity and range than CCD/CMOS, are on market for almost 100 years, but still, FPAs made from them only recently showed up, and only in military, guess why?

#7 ASTERON

ASTERON

    Surveyor 1

  • *****
  • Posts: 1702
  • Joined: 24 Nov 2007
  • Loc: ISRAEL

Posted 24 June 2013 - 01:12 PM

Why ? :poke:

#8 ASTERON

ASTERON

    Surveyor 1

  • *****
  • Posts: 1702
  • Joined: 24 Nov 2007
  • Loc: ISRAEL

Posted 24 June 2013 - 01:27 PM

Hmmmm...
A Short check ( Vikipedia) shows that both InSb and PbS are good for detecting light in the infrared wavelengths ( InSb in the range 1-5 micron and PbS at 1-2.5 micron or 2-4 micron, depending on temperature).
Both Materials require cryogenic temperatures (use of Liquid nitrogen or highly cascaded peltier systems).

Maybe that's why they are not so popular with Camera manufacturers ? :whistle:

#9 seryddwr

seryddwr

    Innocent Bystander

  • *****
  • Posts: 3370
  • Joined: 19 Feb 2010
  • Loc: La-la land.

Posted 24 June 2013 - 02:44 PM

Plumbum Sulphide, Indium Antimonide offer far better sensitivity and range than CCD/CMOS, are on market for almost 100 years, but still, FPAs made from them only recently showed up, and only in military, guess why?

Pros have been using them since the 80s at least. Very expensive, IR sensors that must be cryogenically cooled.

#10 Larry F

Larry F

    Vanguard

  • *****
  • Posts: 2211
  • Joined: 24 May 2004
  • Loc: Westchester, NY

Posted 25 June 2013 - 09:14 AM

There should be some special recognition for the first guy who brings a liquid nitrogen tank to a star party!

#11 Dragon Man

Dragon Man

    Vanguard

  • *****
  • Posts: 2058
  • Joined: 07 Mar 2006
  • Loc: Snake Valley, Australia

Posted 25 June 2013 - 09:51 AM

There should be some special recognition for the first guy who brings a liquid nitrogen tank to a star party!


:roflmao:

#12 PEterW

PEterW

    Viking 1

  • -----
  • Posts: 770
  • Joined: 02 Jan 2006
  • Loc: SW London, UK

Posted 25 June 2013 - 12:42 PM

Bring custard, single cream, chocolate powder and ginger jam and I'll run you off some liquid nitrogen ice cream...... Far more fun than just cooling detectors!

Cheers

PEterW

#13 CuriousOne

CuriousOne

    Explorer 1

  • -----
  • Posts: 54
  • Joined: 22 Jan 2013

Posted 27 June 2013 - 03:13 PM

All my respects to wikipedia, but you meet PbS sensors in everyday life and 100% sure they are not cooled.

And regarding the "pros are using since 80s", can you post a link/name/model of manufacturer/array/etc? (P.S. I know one, it's name begins with T and ends with N )

For the liquid nitrogen flask - this is quite usual accessory on Overclocker parties, see no reason why not should became typical on star parties, too.

#14 ASTERON

ASTERON

    Surveyor 1

  • *****
  • Posts: 1702
  • Joined: 24 Nov 2007
  • Loc: ISRAEL

Posted 30 June 2013 - 10:16 AM

are U sure they were PbS and nor CdS ?( Cadmium Sulphide). The latter is operable at RT.






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics