Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 233.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 267.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\27617323
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 ACS+Omega
2016 ; 1
(1
): 148-159
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Photoluminescence Blinking of Single-Crystal Methylammonium Lead Iodide
Perovskite Nanorods Induced by Surface Traps
#MMPMID27617323
Yuan H
; Debroye E
; Caliandro G
; Janssen KP
; van Loon J
; Kirschhock CE
; Martens JA
; Hofkens J
; Roeffaers MB
ACS Omega
2016[Jul]; 1
(1
): 148-159
PMID27617323
show ga
Photoluminescence (PL) of organometal halide perovskite materials reflects the
charge dynamics inside of the material and thus contains important information
for understanding the electro-optical properties of the material. Interpretation
of PL blinking of methylammonium lead iodide (MAPbI(3)) nanostructures observed
on polycrystalline samples remains puzzling owing to their intrinsic disordered
nature. Here, we report a novel method for the synthesis of high-quality
single-crystal MAPbI(3) nanorods and demonstrate a single-crystal study on
MAPbI(3) PL blinking. At low excitation power densities, two-state blinking was
found on individual nanorods with dimensions of several hundred nanometers. A
super-resolution localization study on the blinking of individual nanorods showed
that single crystals of several hundred nanometers emit and blink as a whole,
without showing changes in the localization center over the crystal. Moreover,
both the blinking ON and OFF times showed power-law distributions, indicating
trapping-detrapping processes. This is further supported by the PL decay times of
the individual nanorods, which were found to correlate with the ON/OFF states.
Furthermore, a strong environmental dependence of the nanorod PL blinking was
revealed by comparing the measurements in vacuum, nitrogen, and air, implying
that traps locate close to crystal surfaces. We explain our observations by
proposing surface charge traps that are likely related to under-coordinated lead
ions and methylammonium vacancies to result in the PL blinking observed here.
free
free
free
