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Low‐Temperature Plasma Processing of Platinum Porphyrins for the Development of Metal Nanostructured Layers
Author(s) -
Filippin Alejandro Nicolas,
SanchezValencia Juan Ramon,
Idígoras Jesús,
MaciasMontero Manuel,
Alcaire Maria,
Aparicio Francisco Javier,
Espinos Juan Pedro,
LopezSantos Carmen,
Frutos Fabian,
Barranco Angel,
Anta Juan Antonio,
Borras Ana
Publication year - 2017
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201601233
Subject(s) - materials science , platinum , photocurrent , fabrication , ultraviolet , plasma , optoelectronics , raman spectroscopy , porosity , nanostructure , nanotechnology , chemical engineering , catalysis , optics , composite material , organic chemistry , medicine , chemistry , alternative medicine , physics , engineering , pathology , quantum mechanics
This article establishes the bases for a vacuum and plasma supported methodology for the fabrication at mild temperatures of nanostructured platinum in the form of porous layers and nanocolumns using platinum octaethylporphyrin as precursor. In addition, the application of these materials as tunable optical filters and nano‐counterelectrodes is proved. On one hand, the transparency in the ultraviolet–visible–near infrared range can be adjusted precisely between 70% and 1% by tuning the deposition and processing conditions, obtaining a high spectral planarity. Deviations of the spectra from an ideal flat filter are below 4%, paving the way to the fabrication of neutral density filters. The transparency limit values yield a sheet resistivity of ≈1350 and 120 Ω □ −1 , respectively. On the other hand, the catalytic properties of the nanostructures are further demonstrated by their implementation as counterelectrodes of excitonic solar cells surpassing the performance of commercial platinum as counterelectrode in a 20% of the overall cell efficiency due to simultaneous enhancement of short‐circuit photocurrent and open‐circuit photovoltage. One of the most interesting features of the developed methodology is its straightforward application to other metal porphyrins and phthalocyanines readily sublimable under mild vacuum and temperature conditions.