| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9586274 | Journal of Luminescence | 2005 | 8 Pages |
Abstract
A complex investigation of the dynamics of electronic excitations and luminescence in nonlinear optical crystals of ammonium dihydrophosphate NH4H2PO4 was performed using low-temperature vacuum ultraviolet luminescence spectroscopy with time resolution upon selective photoexcitation by synchrotron radiation. Data on the photoluminescence (PL) decay kinetics, time-resolved PL spectra (2-6.2Â eV), and time-resolved PL excitation spectra (4-24Â eV) were obtained for the first time for NH4H2PO4 crystals at 8Â K. It is ascertained that the PL of NH4H2PO4 crystals in the vicinity of 4.7Â eV has intrinsic character due to the radiative annihilation of self-trapped excitons. Possible channels of generation and decay of relaxed and unrelaxed electronic excitations in NH4H2PO4 crystals are discussed.
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Authors
Igor N. Ogorodnikov, Vladimir A. Pustovarov, Marco Kirm, Vlad S. Cheremnykh,