High-Performance Photodetector Based on Organic-Inorganic Perovskite CH3NH3PbI3/ZnO Heterostructure

In this letter, organic-inorganic hybrid perovskite CH 3 NH 3 PbI 3 -based heterostructure photodetector is fabricated on fluorine-doped tin oxide (FTO) substrate. The perovskite CH 3 NH 3 PbI 3 and metal oxide ZnO are synthesized using the sol-gel chemical route. The synthesized hybrid perovskite C...

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Bibliographic Details
Published in:IEEE photonics technology letters 2019-07, Vol.31 (14), p.1151-1154
Main Authors: Upadhyay, Rishibrind Kumar, Singh, Abhinav Pratap, Upadhyay, Deepchandra, Ratan, Smrity, Kumar, Chandan, Jit, Satyabrata
Format: Article
Language:English
Subjects:
Chemical synthesis
Crystallites
Electron transport
Fluorine
Glass
Heterostructure
Heterostructures
II-VI semiconductor materials
Light
Luminous intensity
Nanoparticles
Organic chemistry
perovskite
Perovskites
photodetector
Photodetectors
Photoluminescence
Photometers
Photovoltaic cells
responsivity
Sol-gel processes
Substrates
Thin films
Tin oxides
Wurtzite
X-ray scattering
Zinc oxide
ZnO
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Summary:In this letter, organic-inorganic hybrid perovskite CH 3 NH 3 PbI 3 -based heterostructure photodetector is fabricated on fluorine-doped tin oxide (FTO) substrate. The perovskite CH 3 NH 3 PbI 3 and metal oxide ZnO are synthesized using the sol-gel chemical route. The synthesized hybrid perovskite CH 3 NH 3 PbI 3 has a tetragonal phase with a crystallite size of ~39.01 nm, whereas ZnO has a wurtzite hexagonal structure with a crystallite size of ~26.47 nm. The uniform distribution of particles is found in the thin film of CH 3 NH 3 PbI 3 and ZnO with an average particle size of ~50 and ~30 nm, respectively. An efficient photoluminescence band is observed at ~1.59 eV in CH 3 NH 3 PbI 3 thin film measured at ambient condition and excited with light of wavelength 405 nm. The heterostructure is formed between perovskite and ZnO, which also work as an efficient electron transport layer. The heterostructure is characterized using I-V and C-V measurements that confirm the formation of the barrier between CH 3 NH 3 PbI 3 and ZnO. The photoresponsivity of ~21.8 A/W is obtained at an applied bias voltage of -1 V under the illumination of light obtained from monochromator of wavelength ~436 nm and intensity ~190 μW/cm 2 .
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2019.2920780