Electrochemical deposition and thermoelectric characterisation of a semiconducting 2-D metal–organic framework thin film

Abstract

<p>The anodic electrochemical synthesis of a Cu₃(HHTP)₂ thin film and its thermoelectric properties are reported for the first time.</p>

Recent Progress in Designing Thermoelectric Metal–Organic Frameworks

“…These literature-reported S values are presented in Figure 2. [32,49,[51][52][53][54][55][56][57] As shown, the first S value for MOF materials was reported in 2015, which was measured to be 375 µV K −1 at room temperature. [32] This large Seebeck coefficient is comparable or even superior to that of many inorganic semiconductors, suggesting the huge potential of MOFs in thermoelectric applications.…”

“…Experimental data of Seebeck coefficient measured at room temperature for various MOFs extracted from literatures. [32,49,[51][52][53][54][55][56][57] severely reduced or even eliminated due to the occupying by guest molecules. In this aspect, Ouay et al synthesized a series of conductive porous MOF-based composites via the polymerization of EDOT in the cavities of [Cr 3 (BDC) 3 OF(H 2 O) 2 ] n (MIL-101(Cr), BDC = benzenedicarboxylate) (Figure 4c).…”

“…The authors pointed out that the rational combination of metal ions and organic ligands can give more 2D MOFs with the desired thermoelectric properties. In another study, de Lourdes Gonzalez-Juarez et al prepared the 2D MOF films of Cu 3 (2,3,6,7,10,11-hexahydroxytriphenylene) 2 (Cu 3 (HHTP) 2 ) via electrochemical deposition, [55] which offers a scalable approach for the fabrication of novel 2D thermoelectric materials. At room temperature, the as-prepared Cu 3 (HHTP) 2 films exhibited an electrical conductivity of 2.28 × 10 −3 S cm −1 together with a Seebeck coefficient of −121.4 µV K −1 , leading to a PF value of 3.15 × 10 −3 µW m −1 K −2 .…”

Thin Film Growth of 3D Sr‐based Metal‐Organic Framework on Conductive Glass via Electrochemical Deposition

“… [27] Anodization techniques were also reported for the electrochemical synthesis of several MOFs including Cu 3 (HHTP) 2 on transparent conducting substrates for potential applications in optoelectronics as well as thermoelectrics. [ 4 , 28 ] The concentration of linkers and metal ions plays an important role in controlling the thickness of films. In 2019, Nakamura et al.…”

Synthesis and Characterization of Ru-MOFs on Microelectrode for Trace Mercury Detection

“…As an alternative, the cathode synthesis method can directly deposit MOFs on the electrode surface. Compared with traditional hydrothermal synthesis, the cathode method has short synthesis time and mild conditions [39][40][41][42][43], and can directly synthesize MOFs on the electrode. For the cathode synthesized MOFs, its lattice structure is prone to defect and it contains unsaturated metal centers, which improves the conductivity of the material.…”