Jobin-Yvon Triax 320 Photoluminescence (PL) Spetrometer
Applications
Photoluminescence is when light energy, or photons, stimulate the emission of a photon. It takes on three forms: fluorescence, phosphorescence and chemiluminescence. Fluorescence is a type of luminescence caused by photons exciting a molecule, raising it to an electronic excited state. The excited state undergoes rapid thermal energy loss to the environment through vibrations, and then a photon is emitted from the lowest-lying singlet excited state. This process of photon emission competes for other non-radiative processes including energy transfer and heat loss.
Typical applications are band gap determination, analysis of impurity levels and defects, investigating recombination mechanisms.
Location
220 Nieuwland Science Hall - Complex Quantum Matter Laboratory
Capabilities
Available excitations:
| Wavelength (nm) | Maximum power (mW) | Adjustable power | Modulation | Type |
| 404 | 80 | ✔ | ✔ | Coherent CUBE |
| 405 | 17 | ✔ | ✔ | Coherent CUBE |
| 488 | 120 | ✔ | ✘ | Coherent Sapphire HP |
| 530 | 400 | ✔ | ✘ | Coherent Sapphire LP |
| 568 | 60 | ✔ | ✘ | Coherent Sapphire LP |
| 543.5 | 1 | ✘ | ✘ | uniphase 1674P |
| 633 | 1 | ✘ | ✘ | Oriel 79241 He-Ne |
| 639 | 150 | ✔ | ✔ | Coherent CUBE |
| 661 | 94 | ✔ | ✔ | Coherent CUBE |
External modulation is available for the Sapphire lasers.
- Lamps:
- Oriel lamp with 1200 gr/mm grating monochromator @ ~20 mW at selected wavelength; range: ~420-700 nm
Available gratings:
- 600 grooves/mm centered at 500 nm
- 1200 grooves/mm centered at 500 nm
- 1200 grooves/mm centered at 750 nm
Detectors:
- Horiba Symphony 1024x256 pixels (OPEN-1LS) LN2 cooled visible CCD (200-900 nm; maximum around 720 nm)
Related work
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M. M. Rudolf, G. Bortel, B. G. Márkus, N. Jegenyes, V. Verkhovlyuk, K. Kamarás, F. Simon, A. Gali, D. Beke: Optimization of Chromium-Doped Zinc Gallate Nanocrystals for Strong Near-Infrared Emission by Annealing, ACS Applied Nano Materials 5, 8950-8961 (2022)
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D. Beke, M. V. Nardi, G. Bortel, M. Timpel, Zs. Czigány, L. Pasquali, A. Chiappini, G. Bais, M. Rudolf, D. Zalka, F. Bigi, F. Rossi, L. Bencs, A. Pekker, B. G. Márkus, G. Salviati, S. E. Saddow, K. Kamarás, F. Simon, A. Gali: Enhancement of X-ray-Excited Red Luminescence of Chromium-Doped Zinc Gallate via Ultrasmall Silicon Carbide Nanocrystals, Chemistry of Materials 33(7), 2457-2465 (2021)