Thin films of molecular materials synthesized from fisher's carbene ferrocenyl: Film formation and electrical properties

Sánchez-Vergara, María Elena; Ortíz, A.; Álvarez-Toledano, Cecilio; Moreno, Abel; Álvarez, Jorge

doi:10.1016/j.tsf.2007.12.147

Cited by 6 publications

(6 citation statements)

References 23 publications

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“…[1][2][3] Organometallic compounds may eventually be considered for electronic applications requiring a large area coverage, structural exibility and low-temperature processing. [4][5][6] Recent research work has been oriented to the formation and characterization of semiconducting thin lms. Some methods have been extensively used to produce organometallic semiconducting thin lms, such as chemical vapor deposition, electrodeposition and vacuum thermal evaporation.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and optical properties of iron(iii) complexes of 2-benzylidene-1-indanone derivative thin films

et al. 2014

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Section: Introductionmentioning

confidence: 99%

Synthesis and optical properties of iron(iii) complexes of 2-benzylidene-1-indanone derivative thin films

et al. 2014

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“…Another important optoelectronic characteristic in organic semiconductors is the fact that their electronic band gap can be engineered by chemical synthesis [2]. Group 6 Fischer metal-carbene complexes are an example of the above; depending on the metal, the functional group or the substituent found in the molecular structure is the charge transfer capacity and in general, the optoelectronic properties that the carbene presents [4][5][6][7][8][9][10][11][12][13][14]. Organic semiconductors can be classified into two classes: molecular semiconductors (MSCs), like the Fischer metal-carbene complexes, and π-conjugated polymers [14].…”

Section: Introductionmentioning

confidence: 99%

“…Transient electronics represents an emerging class of technology whose key characteristic is that it physically disappears, in whole or in part, in a controlled fashion after it has served its targeted function [40,41]. In order to compare and determine the best performance of such PEDOT:PSS based devices, Fischer metal-carbene complexes were used as active materials, previously synthesized and studied as organic semiconductors by some of the authors of this work [13,14]. Two such metal-carbene complexes were used as thin films and their properties compared for their application in solar cell devices.…”

Section: Introductionmentioning

confidence: 99%

Innovative Incorporation of Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) as Hole Carrier Transport Layer and as Anode for Organic Solar Cells Performance Improvement

et al. 2020

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In this work, we present a comparative study of benzoid poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) as electrode and as hole carrier transport layer (HTL) in the manufacture of organic photovoltaic devices using Fischer metal-carbene complexes. The performance of the different devices was evaluated for solar cell applications. Scanning electronic microscopy (SEM) and X-ray diffraction (XRD) were used to characterize the thin films that integrated the devices. A more ordered and crystallized active film microstructure is observed when using benzoid PEDOT:PSS as nucleation layer. The optical gap for both direct and indirect electronic transitions was evaluated from ultraviolet-visible spectroscopy data (UV-vis), as well as the absorption coefficient (α), and the values are in the range of 2.10–2.93 eV. Photovoltaic devices with conventional architecture, using two different chromium carbenes as active layers, were manufactured, and their electrical behavior was studied. The devices were irradiated with different wavelengths between the infrared and ultraviolet regions of the electromagnetic spectrum. Using the PEDOT:PSS film as hole carrier transport layer (HTL) decreases the slope on the ohmic and space charge limited current (SCLC) regions and eliminates the trap-charge limited current (T-CLC) mechanism. Furthermore, a saturation current of ~1.95 × 10−10 A and higher current values ~1.75 × 10−2 A at 4 V, ~4 orders in magnitude larger were observed. The PEDOT:PSS films as HTL in the devices reduced the injection barrier, thus showing a better performance than as anodes in this type of organic solar cells.

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“…Fischer’s carbene ferrocenyl complexes have been previously studied by important groups of researchers as Barluenga et al [ 21 ], Sierra et al [ 22 , 23 , 24 , 25 , 26 , 27 , 28 ] and Landman et al [ 29 , 30 ]. Some authors of this work, have studied their optical and electric properties for their use as semiconductors [ 31 ], however, their application as components of optoelectronic devices has been little analyzed and even less their use as HTLs or ETLs for OSCs. HTLs are incorporated into OSCs in order to allow the transfer of the positive charge carriers injected by the anode of the device or as an electron blocking layer, while the ETLs are responsible for the transport of the electrons injected by the cathode of the device and also act as blockers of holes [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Multifunctional Fischer Aminocarbene Complexes as Hole or Electron Transporting Layers in Organic Solar Cells

et al. 2018

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A new series of Fischer carbenes have been synthetized and examined as hole-transporting or electron-transporting layers (HTLs or ETLs) in the fabrication of organic solar cells (OSCs). The synthesis of three Fischer aminocarbene complexes with the general formula [Cr(CO)5{C(NHCH2)Ar}] (Ar = 2-pyridyl (3a), 3-pyridyl (3b) and 4-pyridyl (3c)) is reported. The molecular structure of complex 3b has been confirmed by X-ray analysis. In order to study the possible applications of the three Fischer aminocarbenes in OSCs, thin films of these complexes were prepared using a vacuum deposition process. These organometallic films were chemically and morphologically characterized by IR spectroscopy, SEM, AFM and XRD. According to the IR and Tauc analysis, the vacuum deposition process generates thin films free of impurities with an activation energy of 4.0, 2.7 and 2.1 eV for 3a, 3b y 3c, respectively. The UV-vis spectra of the amorphous aminocarbene films show that they are practically transparent to the visible radiation of the electromagnetic spectrum. This is due to the fact that their absorption is located mainly in the ultraviolet range. Two OSCs with bulk-heterojunction configuration were manufactured in order to prove the use of the aminocarbenes as ETL o HTL. The aminocarbene [Cr(CO)5{C(NHCH2) 4-pyridyl}] (3c) proved to be suitable as ETL with a fill factor (FF) of 0.23 and a short circuit current density (JSC) of 1.037 mA/cm2.

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Thin films of molecular materials synthesized from fisher's carbene ferrocenyl: Film formation and electrical properties

Cited by 6 publications

References 23 publications

Synthesis and optical properties of iron(iii) complexes of 2-benzylidene-1-indanone derivative thin films

Synthesis and optical properties of iron(iii) complexes of 2-benzylidene-1-indanone derivative thin films

Innovative Incorporation of Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) as Hole Carrier Transport Layer and as Anode for Organic Solar Cells Performance Improvement

Multifunctional Fischer Aminocarbene Complexes as Hole or Electron Transporting Layers in Organic Solar Cells

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