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The UHV Evaporators TCE (Temperature Controlled Evaporator) are ideally suited to the evaporation of organic substances (20°C - 850°C) from the sub monolayer regime to continuous films. Temperature control, cooling and shutter guarantee a defined and reproducible film growth. For the use of the TCE, we recommend quartz crucibles due to the low outgassing. They have an outer diameter of 5 mm and a length of 15 mm.
The table shows the standard versions. To accomodate different needs the evaporators are available in different lengths, with different flanges and different configuration.
| Type | Cells | Cooling | Shutter | Temperature range | Top down operation | |
|---|---|---|---|---|---|---|
| TCE-BSC
(retractable) |
3 | yes | yes | 20°C - 850°C 20°C - 250°C without cooling |
yes (with additional springs and aperture crucibles) |
 |
| TCE-SC | 3 | yes | yes | same as BSC | yes |  |
| TCE-BS (retractable) |
4 | no | yes | 20°C -250°C unlimited in time 250°C-850°C until neighboring crucible reaches max. 150°C |
yes |  |
| TCE-S | 4 | no | yes | same as BS | yes |  |
The figure shows the 3-cell evaporator TCE-BSC, standard version with angle valve and its functionality. This version allows the separation from the main chamber to change the organic material without venting the main chamber.
To avoid working with aperture crucibles the evaporator should be mounted below the sample. The drawing show the evaporator in withdrawn position (left side). In this position the evaporator can be disconnected from the gate valve or pumped down by the corner valve after exchanging the material. The drawing right shows the operating position.
For head-down operation use aperture crucibles.
