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Crystals & wafers

GaP

TGS DTGS

ADTGS


TGS crystal structure 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

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