TY - JOUR
T1 - Surface-Plasmonic-Coupled Photodetector Based on MAPbI3Perovskites with Au Nanoparticles
T2 - Significantly Enhanced Photoluminescence and Photodetectivity
AU - Kim, Taek Joon
AU - Kwon, Dayeong
AU - Kim, Jun Young
AU - Harit, Amit Kumar
AU - Lee, Eunji
AU - Woo, Han Young
AU - Kim, Jeongyong
AU - Joo, Jinsoo
N1 - Funding Information:
This study was supported by the National Research Foundation (NRF) of Korea funded by the Korean government (no. 2021R1A2C2005885, 2020M3H4A3081814, and 2021R1A6A1A03039696).
Publisher Copyright:
© 2022 ACS Applied Electronic Material. All rights reserved.
PY - 2022/9/27
Y1 - 2022/9/27
N2 - Organic-inorganic metal halide perovskites (OMHPs) are promising active materials suitable for highly efficient solar cells, photodetectors, light-emitting diodes, and sensors. In this study, methylammonium lead iodide (MAPbI3) thin sheets (TSs) were synthesized as OMHPs using both hybrid vapor-solution method for optical study and anti-solvent solution method for the photodetector. π-Conjugated polyelectrolyte (π-CPE), such as poly(9,9-bis(4′-sulfonatobutyl)fluorene-alt-1,4-phenylene) potassium (FPS-K), was spin-coated on the MAPbI3TS, and functionalized gold nanoparticles (Au-NPs) were hybridized. The laser confocal microscope photoluminescence (PL) intensity of the MAPbI3TS was significantly enhanced after hybridization with Au-NPs/FPS-K, owing to the passivating effect of the FPS-K and the generation of extra-photoexcited charges by local surface plasmon resonance (LSPR) coupling with Au-NPs. These results were supported by the variation in the exciton lifetime measured from the time-resolved PL decay curves. The photocurrent of the MAPbI3photodetector increased up to 1.1 × 104times, and the photoresponsivity (R) and photodetectivity (D*) increased by 70 and 13 times, respectively, with the hybridization of Au-NPs/FPS-K. The highest D∗ of the Au-NPs/FPS-K/MAPbI3photodetector was measured to be 7.5 × 1010Jones at 735 nm excitation. The power and wavelength dependencies of R and D∗ for the MAPbI3photodetector were also significantly improved by the Au-NPs/FPS-K hybrid. These results support the development of high-performance perovskite photodetectors utilizing LSPR coupling with the π-CPE layer.
AB - Organic-inorganic metal halide perovskites (OMHPs) are promising active materials suitable for highly efficient solar cells, photodetectors, light-emitting diodes, and sensors. In this study, methylammonium lead iodide (MAPbI3) thin sheets (TSs) were synthesized as OMHPs using both hybrid vapor-solution method for optical study and anti-solvent solution method for the photodetector. π-Conjugated polyelectrolyte (π-CPE), such as poly(9,9-bis(4′-sulfonatobutyl)fluorene-alt-1,4-phenylene) potassium (FPS-K), was spin-coated on the MAPbI3TS, and functionalized gold nanoparticles (Au-NPs) were hybridized. The laser confocal microscope photoluminescence (PL) intensity of the MAPbI3TS was significantly enhanced after hybridization with Au-NPs/FPS-K, owing to the passivating effect of the FPS-K and the generation of extra-photoexcited charges by local surface plasmon resonance (LSPR) coupling with Au-NPs. These results were supported by the variation in the exciton lifetime measured from the time-resolved PL decay curves. The photocurrent of the MAPbI3photodetector increased up to 1.1 × 104times, and the photoresponsivity (R) and photodetectivity (D*) increased by 70 and 13 times, respectively, with the hybridization of Au-NPs/FPS-K. The highest D∗ of the Au-NPs/FPS-K/MAPbI3photodetector was measured to be 7.5 × 1010Jones at 735 nm excitation. The power and wavelength dependencies of R and D∗ for the MAPbI3photodetector were also significantly improved by the Au-NPs/FPS-K hybrid. These results support the development of high-performance perovskite photodetectors utilizing LSPR coupling with the π-CPE layer.
KW - gold nanoparticle
KW - methylammonium lead halide perovskite
KW - photodetector
KW - photoluminescence
KW - surface plasmon
UR - http://www.scopus.com/inward/record.url?scp=85137871745&partnerID=8YFLogxK
U2 - 10.1021/acsaelm.2c00779
DO - 10.1021/acsaelm.2c00779
M3 - Article
AN - SCOPUS:85137871745
SN - 2637-6113
VL - 4
SP - 4560
EP - 4568
JO - ACS Applied Electronic Materials
JF - ACS Applied Electronic Materials
IS - 9
ER -