GaP
TGS DTGS
ADTGS
 |
 TGS Triglycine Sulfate, DTGS Deuterated Triglycine Sulfate
Water-soluble Triglycine Sulfate crystals have technological importance for room-temperature IR detectors, earth exploration, radiation monitoring and astronomical telescopes. TGS is the best material used as a sensitive element in pyroelectric sensors due to its high pyroelectric coefficient, reasonably low dielectric constant, and the best quality factor. Pyroelectric sensors based on TGS are uniformly sensitive to radiation in wavelength range from UV to far IR and do need in cryogen cooling for operation.
Using of deuterated DTGS crystals allows to extend the temperature range of sensing due to their higher Curie temperature.
PROPERTIES of TGS and DTGS
| |
Units and testing conditions |
TGS |
DTGS |
| Formula |
|
(NH2CH2OOH)3H2SO4 |
(ND2CD2OOD)3D2SO4 |
| Crystal structure |
|
P21 |
P21 |
| Density |
g/cm3 |
1.66 |
1.7 |
| Curie temperature Tc |
oC |
49 |
57-62* |
| Dielectric constant e |
1kHz, Ebias=5kV/cm, 25oC |
30-35 |
18-25 |
| Dielectric loss tangent Tgd |
1kHz, Ebias=5kV/cm, 25oC |
0.02-0.001 |
0.03-0.001 |
| Pyroelectric constant g |
C cm-2K-1x108 |
3.3-4 |
2.5-3 |
*Depends on deuteration level
STANDARD SPECIFICATIONS
| |
Dimensions*, mm |
Cleavage Plane |
| TGS |
5x5x1; 10x10x1; 25x25x1 |
(010) |
| |
|
|
| DTGS |
5x5x1; 10x10x1; 25x25x1 |
(010) |
* On special request up to 120x120mm for TGS and up to 100x100mm for DTGS |
