1.2 - High Detectivity of Pyroelectric Detectors based on Relaxor-PbTiO3 Single Crystals
- AMA Conferences 2013
2013-05-14 - 2013-05-16
- Proceedings IRS² 2013
- I1 - New Components for Detection and Sensing
- A. Movchikova, N. Neumann - InfraTec GmbH, Dresden (Germany), S. Lee - iBULe Photonics Co., LTD, Incheon (Korea), M. Es-Souni, M. Dietze - Institute for Materials & Surface Technology (IMST), Kiel (Germany)
- 16 - 19
In this work the suitability of Mn-doped lead indium niobate-lead magnesium niobate-lead titanate (xPb(In1/2Nb1/2)O3-yPb(Mg1/3Nb2/3)O3-(1-x-y)PbTiO3) single crystals in pyroelectric detectors was evaluated and compared with standard lithium tantalate (LiTaO3). Pyroelectric and dielectric measurements confirmed an increased processing and operating temperature range due to higher phase transitions of 0.26Pb(In1/2Nb1/2)O3-0.42Pb(Mg1/3Nb2/3)O3-0.32PbTiO3:Mn. Due to the high pyroelectric coefficient, relaxor-lead titanate based sensors perform an increase of the specific detectivity in relation to standard lithium tantalate based detectors. The evaluation shows good results in the design and fabrication of the detectors for long-range flame detection and high-resolution gas analysis.