TY - JOUR
T1 - Observation of local heating in an ion track by measuring the ion-induced luminescence spectrum
AU - Koshimizu, M.
AU - Shibuya, K.
AU - Asai, K.
AU - Shibata, H.
N1 - Funding Information:
This work was financially supported by the Core Research for Evolutional Science and Technology (CREST) of the Japan Science and Technology Corporation, and the Sumitomo Foundation. Two of the authors (M.K. and K.S.) also acknowledge the support from the Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.
PY - 2003/5
Y1 - 2003/5
N2 - The rise of the local temperature in an ion track was observed by utilizing fast exciton radiative recombination in the layered perovskite-type materials (C3H7NH3)2PbBr4 and (C4H9NH3)2PbBr4. In (C3H7NH3)2PbBr4, the local temperature was an increasing function of the excitation density or linear energy transfer (LET). However, the same local temperature was obtained for different LETs in (C4H9NH3)2PbBr4, which was attributed to local melting of the organic layers. Furthermore, the obtained value of the local "melting point" was much higher than that in the bulk analog of the organic and inorganic layers, which indicates that nonequilibrium phonon dynamics plays a crucial role in the thermal spike process.
AB - The rise of the local temperature in an ion track was observed by utilizing fast exciton radiative recombination in the layered perovskite-type materials (C3H7NH3)2PbBr4 and (C4H9NH3)2PbBr4. In (C3H7NH3)2PbBr4, the local temperature was an increasing function of the excitation density or linear energy transfer (LET). However, the same local temperature was obtained for different LETs in (C4H9NH3)2PbBr4, which was attributed to local melting of the organic layers. Furthermore, the obtained value of the local "melting point" was much higher than that in the bulk analog of the organic and inorganic layers, which indicates that nonequilibrium phonon dynamics plays a crucial role in the thermal spike process.
KW - Ion track
KW - Perovskite
KW - Thermal spike
KW - Urbach rule
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U2 - 10.1016/S0168-583X(03)00718-3
DO - 10.1016/S0168-583X(03)00718-3
M3 - Conference article
AN - SCOPUS:0037809217
VL - 206
SP - 57
EP - 60
JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
SN - 0168-583X
T2 - 13th International conference on Ion beam modification of Mate
Y2 - 1 September 2002 through 6 September 2002
ER -