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Preparation chamber

Preparation chamber. Chamber status Preparation methods Results: photocurrent, stoichoimetric control Next step. 1. Chamber status. Verdampfer Blendenmodul Laser Control system test Thickness monitor Cathode heating High voltage Shutter Cathode plug. 2.Methods. 3. Results.

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Preparation chamber

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  1. Preparation chamber Chamber status Preparation methods Results: photocurrent, stoichoimetric control Next step

  2. 1. Chamber status • Verdampfer • Blendenmodul • Laser • Control system test • Thickness monitor • Cathode heating • High voltage • Shutter • Cathode plug

  3. 2.Methods

  4. 3. Results Photocurrent #05-05-31 Vacuum in the experiment #05-06-16 Vacuum is not good enough

  5. 3. Results Stoichiometric control: Cs/Te ~ 2 It is hard to control.

  6. Stoichiometric rate measure(example: #05-05-31 CsTe on Cu) 1. PIXE: Cs/Te=0.55 (calculated by GUPIX, Dr. Grambole) 2. RBS: Cs/Te=0.44(calculated by XRUMP, Hr. Zhou)

  7. photocurrent measurement • Photocurrent pulse

  8. 4.Next step • Chamber cleaning (10-10mbar) • Mo cathode polishing (0.1µm) • Clean-room rebuilding Homepage: https://www.fz-rossendorf.de/projects/CARE/index.htm Logbuch: https://www.fz-rossendorf.de/pls/rois/elbe.srflogbook.data

  9. Thickness Quartz thickness monitor STM-1

  10. Co-evaporation #05-06-23

  11. RBS for thickness and atom rate

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