%0 Journal Article
%A Dai, Jun
%A Fu, Yongping
%A Manger, Lydia H.
%A Rea, Morgan T.
%A Hwang, Leekyoung
%A Goldsmith, Randall H.
%A Jin, Song
%D 2016
%T Carrier Decay Properties of Mixed Cation Formamidinium–Methylammonium
Lead Iodide Perovskite [HC(NH2)2]1–x[CH3NH3]xPbI3 Nanorods
%U https://acs.figshare.com/articles/journal_contribution/Carrier_Decay_Properties_of_Mixed_Cation_Formamidinium_Methylammonium_Lead_Iodide_Perovskite_HC_NH_sub_2_sub_sub_2_sub_sub_1_i_x_i_sub_CH_sub_3_sub_NH_sub_3_sub_sub_i_x_i_sub_PbI_sub_3_sub_Nanorods/4264472
%R 10.1021/acs.jpclett.6b01958.s001
%2 https://acs.figshare.com/ndownloader/files/6947363
%K iodide perovskites
%K x PbI 3
%K HC
%K FA 0.4 MA 0.6 PbI 3 displays
%K PL
%K CH 3 NH 3
%K carrier Decay Properties
%K MAPbI 3 nanorods
%K cation
%K report carrier decay dynamics
%X Organic–inorganic
lead iodide perovskites are efficient
materials for photovoltaics and light-emitting diodes. We report carrier
decay dynamics of nanorods of mixed cation formamidinium and methylammonium
lead iodide perovskites [HC(NH2)2]1–x[CH3NH3]xPbI3 (FA1–xMAxPbI3) synthesized through a simple
solution method. The structure and FA/MA composition ratio of the
single-crystal FA1–xMAxPbI3 nanorods are fully characterized,
which shows that the mixed cation FA1–xMAxPbI3 nanorods are
stabilized in the perovskite structure. The photoluminescence (PL)
emission from FA1–xMAxPbI3 nanorods continuously shifts from
821 to 782 nm as the MA ratio (x) increases from
0 to 1 and is shown to be inhomogeneously broadened. Time-resolved
PL from individual FA1–xMAxPbI3 nanorods demonstrates that
lifetimes of mixed cation FA1–xMAxPbI3 nanorods are longer
than those of the pure FAPbI3 or MAPbI3 nanorods,
and the FA0.4MA0.6PbI3 displays the
longest average PL lifetime of about 2 μs. These results suggest
that mixed cation FA1–xMAxPbI3 perovskites are promising for high-efficiency
photovoltaics and other optoelectronic applications.
%I ACS Publications