TY - JOUR
T1 - Optical properties of Wannier excitons in closely located quantum wells in organic-inorganic layered perovskite-type compounds
AU - Tajima, Daiki
AU - Koshimizu, Masanori
AU - Fujimoto, Yutaka
AU - Asai, Keisuke
N1 - Publisher Copyright:
© 2018 The Japan Society of Applied Physics.
PY - 2018/2
Y1 - 2018/2
N2 - We analyzed the optical properties of Wannier excitons in closely located quantum wells in organic-inorganic layered perovskite-type compounds. In the spectra of C n H2 n +1NH3X (n = 2, 3, or 4; X = Cl or Br), we observed absorption bands attributed to Wannier excitons. In the case of (C2H5NH3)2PbBr4, two bands were observed in the absorption and luminescence spectra. The two bands are attributed to split Wannier exciton levels arising from the interactions of closely located neighboring quantum wells. Such a split was not observed in the chloride-containing perovskite. This result indicates that the halogens in the inorganic layers have a significant effect on the interactions between the neighboring inorganic layers.
AB - We analyzed the optical properties of Wannier excitons in closely located quantum wells in organic-inorganic layered perovskite-type compounds. In the spectra of C n H2 n +1NH3X (n = 2, 3, or 4; X = Cl or Br), we observed absorption bands attributed to Wannier excitons. In the case of (C2H5NH3)2PbBr4, two bands were observed in the absorption and luminescence spectra. The two bands are attributed to split Wannier exciton levels arising from the interactions of closely located neighboring quantum wells. Such a split was not observed in the chloride-containing perovskite. This result indicates that the halogens in the inorganic layers have a significant effect on the interactions between the neighboring inorganic layers.
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U2 - 10.7567/JJAP.57.02CA01
DO - 10.7567/JJAP.57.02CA01
M3 - Article
AN - SCOPUS:85040905498
SN - 0021-4922
VL - 57
JO - Japanese Journal of Applied Physics
JF - Japanese Journal of Applied Physics
IS - 2
M1 - 02CA01
ER -