NNN 14 P New coordination compounds incorporated in porouS INP membranes for IR and terahertz applications
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VODĂ, Irina, SIRBU, Lilian, ESINENCO, Dorin. NNN 14 P New coordination compounds incorporated in porouS INP membranes for IR and terahertz applications. In: Materials Science and Condensed Matter Physics, 13-17 septembrie 2010, Chișinău. Chișinău, Republica Moldova: Institutul de Fizică Aplicată, 2010, Editia 5, p. 210.
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Materials Science and Condensed Matter Physics
Editia 5, 2010
Conferința "Materials Science and Condensed Matter Physics"
Chișinău, Moldova, 13-17 septembrie 2010

NNN 14 P New coordination compounds incorporated in porouS INP membranes for IR and terahertz applications


Pag. 210-210

Vodă Irina1, Sirbu Lilian2, Esinenco Dorin3
 
1 Institute of Chemistry,
2 Institute of the Electronic Engineering and Nanotechnologies "D. Ghitu",
3 Technical University of Moldova
 
Disponibil în IBN: 21 aprilie 2021


Rezumat

New coordination compounds with structural formulae [Zn(C3N2(C6H5)2NO2)2(CH3OH)2] and [Ni(C3N2(C6H5)2NO2)2(CH3OH)2] have been synthesized and characterized by X-ray crystallography (Fig. 1 left). These complexes have pseudopolimeric structures being connected to each other by hydrogen bonding (Fig. 1 center). This behavior made possible the introduction of these complexes in porous n-InP membranes with [1 1 1] crystallographic orientation. [1 1 1]-oriented substrates of n-InP single crystals with 500 μm thickness and free electron concentration of 1.3 x 1018 cm−3 were used. The electrochemical etching was carried out in 5% HC1 aqueous solution in potentiostatic regime as described elsewhere [1]. A scanning electron microscope (SEM) (Tescan SEM) was used to analyze the morphology and chemical composition of the porous samples. The complex deposition in the porous structure was carried out in a dark room. The monomers were incorporated into the porous layer from a Zn(C3N2(C6H5)2NO2)2(CH3OH)2 : C3H6O and Ni(C3N2(C6H5)2NO2)2(CH3OH)2 : C3H6O solution, respectively. Afterwards, the samples were dried for several days at room temperature. The morphology of the monomer nanowires in an InP template is illustrated in Fig. 1 (right). EDX analysis of coordination compounds demonstrates that they have fully filled the nanostructured template of n-InP along the entire depth of pores. Moreover, the terahertz emission from porous InP was examined as a function of pump fluence in reflection geometry [2, 3]. These types of structures with less homogeneity are applicable to future energy solar cells, while samples with a fine regulated and controlled distribution of the pores are expected to be suitable for quantum processing networks.figureFig. 1: left: XRD analyses of the complexes; center: Hydrogen bonding inside [Ni(C3N2(C6H5)2NO2)2(CH3OH)2] structure; right: SEM image of an InP template filled with coordination compounds. The inset shows a top of view of the pores.