Morphology and properties of pyrite nanoparticles obtained by pulsed laser ablation in liquid and thin films for photodetection

Akshana Parameswaran Sreekala, Bindu Krishnan, Rene Fabian Cienfuegos Pelaes, David Avellaneda Avellaneda, Josué Amílcar Aguilar-Martínez and Sadasivan Shaji

Beilstein J. Nanotechnol. 2025, 16, 785–805. https://doi.org/10.3762/bjnano.16.60

Supporting Information

Images of the FeS₂ nanocolloids prepared in different solvents, tabulation of physical properties of the solvents and binding energy values of the elements from XPS, optical studies of FeS₂ nanoparticles, XRD, SEM and photoresponse measurements of the pyrite nanoparticles and thin films.

Supporting Information File 1: Additional tables and figures.
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Morphology and properties of pyrite nanoparticles obtained by pulsed laser ablation in liquid and thin films for photodetection

Akshana Parameswaran Sreekala, Bindu Krishnan, Rene Fabian Cienfuegos Pelaes, David Avellaneda Avellaneda, Josué Amílcar Aguilar-Martínez and Sadasivan Shaji

Beilstein J. Nanotechnol. 2025, 16, 785–805. https://doi.org/10.3762/bjnano.16.60

How to Cite

Parameswaran Sreekala, A.; Krishnan, B.; Cienfuegos Pelaes, R. F.; Avellaneda, D. A.; Aguilar-Martínez, J. A.; Shaji, S. Beilstein J. Nanotechnol. 2025, 16, 785–805. doi:10.3762/bjnano.16.60

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TY  - JOUR
A1  - Parameswaran Sreekala, Akshana
A1  - Krishnan, Bindu
A1  - Cienfuegos Pelaes, Rene Fabian
A1  - Avellaneda, David Avellaneda
A1  - Aguilar-Martínez, Josué Amílcar
A1  - Shaji, Sadasivan
T1  - Morphology and properties of pyrite nanoparticles obtained by pulsed laser ablation in liquid and thin films for photodetection
JF  - Beilstein Journal of Nanotechnology
PY  - 2025///
VL  - 16
SP  - 785
EP  - 805
SN  - 2190-4286
DO  - 10.3762/bjnano.16.60
PB  - Beilstein-Institut
JA  - Beilstein J. Nanotechnol.
UR  - https://doi.org/10.3762/bjnano.16.60
KW  - electrophoretic deposition
KW  - pulsed laser ablation in liquid
KW  - pyrite nanoparticles
KW  - self-powered photodetector
KW  - spin coating
N2  - This work reports the synthesis of pyrite (iron disulfide (FeS2)) nanoparticles (NPs) of different morphologies using pulsed laser ablation in liquid (PLAL) in different organic solvents. The impact of the solvent on the morphological, compositional, and optical properties of the synthesized NPs is investigated by techniques such as transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and ultraviolet–visible spectroscopy. The morphology of the NPs in different solvents varied from spherical, rice-like to rod-like particles which demonstrates the effect of the solvent on the morphology/composition of NPs synthesized by PLAL. FeS2 NPs were successfully synthesized in five different solvents, along with a minor phase of iron sulfide (FeS). Additionally, by combining electrophoretic deposition and spin-coating techniques, thin film photodiodes of FeS2 were fabricated on an n-type Si substrate utilizing the nanocolloids. The structural, morphological and electrical characterizations of the films are also presented. By sulfurization of the films, phase-pure pyrite thin films are obtained. The photodetection range was up to 785 nm photocurrent in the order of 10−6 to 10−4 A for different annealing conditions and a detectivity in the order of 106–108 Jones is attained. The FeS2/n-Si photodetector works in self-powered mode also in addition to the photoconductive mode. The results show the effective fabrication of nanostructured ultraviolet–visible–near infrared thin film photodetectors using semiconductor nanocolloids prepared by PLAL.
ER  -

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