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• Second experiment with known part numbers

  Matthias Koch • 01/02/2020 at 16:10 • 0 comments

  Time for a second revision, this time with known part numbers:
  

  
  This is the list of LEDs used, from left to right:

  ---------------------------------------------------------------------------------------------------------------------------------------------
    #  Colour  Reichelt part     peakwl Vf min  typ  max     Crystal material    Angle   Brightness  Manufacturer part number          Notes
  ---------------------------------------------------------------------------------------------------------------------------------------------
  
    0    IR    SFH 4346            950 nm   -   1.6  1.9  V   ?                   20°                Osram OS     SFH 4346             Tinted
    1    IR    SFH 4356P           860 nm   -   1.7  2.0  V   ?                   20°                Osram OS     SFH 4356P            Tinted
    2    red   RND 135-00006       700 nm  1.8   -   2.6  V   GaP                 40°      10 mcd    RND          RND 135-00006        Tinted
    3    red   LED 3-3500 RT       660 nm   -   1.85 2.5  V   GaAlAs              50°    2300 mcd    Kingbright   L-934SRC-J4
    4    red   LED 3-4500 RT       660 nm   -   2.1  2.5  V   AlGaInP             34°    4500 mcd    Kingbright   L-7104SRC-J4
    5    red   EVL 264-7SDRC       650 nm  1.7  2.0  2.4  V   AlGaInP             40°     100 mcd    Everlight    264-7SDRC/S530-A3
    6    red   KBT L-7104SURC      640 nm   -   1.9  2.5  V   AlGaInP on GaAs     34°    2500 mcd    Kingbright   L-7104SURC-E
    7    red   KBT L-7104SEC-H     635 nm   -   2.2  2.8  V   AlGaInP             34°    1000 mcd    Kingbright   KBT L-7104SEC-H
    8    red   VIS TLHR 4900       635 nm   -   2.0  3.0  V   GaAsP on GaP        16°      13 mcd    Vishay       TLHR 4900
    9    red   SLK 3MM RT          627 nm   -   2.0  2.5  V   GaAsP on GaP        50°      60 mcd    Kingbright   L-934EC
   10   green  WUE 151034GS0300    525 nm   -   3.2  3.8  V   InGaN               30°   10000 mcd    Würth        151034GS03000
   11  orange  LED 3-7800 OR       611 nm   -   2.2  2.8  V   AlGaInP             34°    7800 mcd    Kingbright   L-7104SEC-J4
   12  orange  LED 3-3000L ONG     605 nm  1.6  2.0  2.4  V   ?                   20°    3000 mcd    Lucky Light  LL-304UAC2E-4AC
   13  yellow  LED 3-2800 GE       590 nm   -   2.0  2.5  V   AlGaInP             34°    2800 mcd    Kingbright   L-7104SYC-J3
  
   14  yellow  NTE NTE30032        592 nm   -   2.0  2.4  V   AlGalnP on GaAs     10°    2500 mcd    NTE          NTE30032
   15  yellow  LED 3-1300 GE       595 nm   -   2.0  2.4  V   AlGaInP             50°    1300 mcd    Kingbright   L-934SYC
   16    ?     VIS TLHY 4205       585 nm   -   2.4  3.0  V   GaAsP on GaP        22°      20 mcd    Vishay       TLHY 4205            Tinted, does not light up
   17 yl-green KBT L-7104MGC       574 nm   -   2.1  2.5  V   AlGaInP             34°     700 mcd    Kingbright   L-7104MGC
   18 yl-green KBT L-7104GC        565 nm   -   2.2  2.5  V   GaP                 34°      60 mcd    Kingbright   L-7104GC
   19   green  LED 3-14000 GN      520 nm   -   3.2  4.0  V   InGaN               34°   14000 mcd    Kingbright   L-7104ZGC-G
   20    red   WUE 151034RS0300    628 nm   -   2.0  2.6  V   AlGalnP             30°    2600 mcd    Würth        151034RS03000
   21   green  EVL 204-10 UBGC     502 nm   -   3.5  4.3  V   InGaN on SiC        20°      50 mcd    Everlight    204-10 UBGC/S400-A6
   22 trqouise RND 135-00151       500 nm  2.6  3.2  3.6  V   ?                   30°    8500 mcd    RND          RND 135-00151
   23   blue   LED 3-3700 BL       465 nm   -   3.3  4.0  V   InGaN               20°    3700 mcd    Kingbright   L-7104VBC-D
  
   24    IR    BPW 34                                         Si                  65°                Vishay       BPW34                PD 600-1050 Peak 900 nm
  
   25   blue   LED 3-2000 BL       465 nm  2.9  3.3  3.6  V   InGaN               30°    2000 mcd    ?            L-314BC-A3
   26   blue   LED 3-3000 BL       458 nm   -   3.2  3.7  V   InGaN               20°    3000 mcd    Kingbright   L-7104QBC-G
   27  blueish EVL 1254UBC         428 nm  3.0  3.8  4.5  V   GaN on SiC          40°     400 mcd    Everlight    1254UBC
   28    UV    LED LL 3-120 VI     400 nm  2.8  3.2  3.8  V   InGaN               20°     120 mcd    LuckyLight   LL-304UVC4B-Q5D
  
   29   green  KBT L-7113ZGC       515 nm   -   3.3  4.1  V   InGaN on Sapphire   20°   14000 mcd    Kingbright   L-7113ZGC            5 mm
  

  Sensitivity measurements were done exactly as in the first revision of the experiment, as explained in the Project Details. As I changed lab in the meanwhile, I cannot use the spectrometer anymore, therefore no measurements of the emission spectra this time. The peaks drawn in red denote the peak wavelength given in the respective datasheets.

  All parts were sensitive to direct sunlight, but with varying orders of magnitude of their discharge times. Therefore, some parts are not sensitive enough for this experiment, other parts are highly sensitive, but for wavelengths outside of the range of my monochromator.

  Data is sorted for emission wavelength.
  

  ---

  Infrared:

  BPW34 is the same photodiode as in the first run of the experiment, which is sensitive to the complete...

  Read more »

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