Charge transfer reactions in near IR absorbing small molecule solution processed organic bulk-heterojunction solar

Sánchez-Díaz, Antonio; Pacios, Roberto; Muñecas, Udane; Torres, Tomás; Palomares, Emilio

doi:10.1016/j.orgel.2010.11.014

Cited by 34 publications

(26 citation statements)

References 48 publications

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“…The FT-IR spectrum of compound 3 is shown in Figure 1 The NMR spectrum used to elucidate the structure of organic compounds gives important information. The 1 H NMR spectrum of the 4-(benzhydryloxy) phthalonitrile compound having an organic structure in DMSO-d 6 The mass spectra of the compounds of phthalocyanine confirm the structures of the compounds. The 1306.79 ion peak value obtained for zinc phthalocyanine is equivalent to the calculated mass of 1306.77.…”

Section: Synthesis and Characterizationmentioning

confidence: 82%

Practical synthesis, characterization and photo-physical properties of metallophthalocyanines bearing benzhydryloxy substituents

Ağırtaş¹,

Öndeş²,

Cabir

2018

International Journal of Chemistry and Technology

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The aim of present study is to make practical synthesis of benzhydryloxy substituted phthalocyanines with high solubility. Therefore, the synthesis and characterization of benzhydryloxy substituted zinc and magnesium of phthalocyanines were performed. The characterization of the new compounds was clarirified by spectra such as IR, NMR, UV and Mass spectra. Furthermore, fluorescence and aggregation behaviors of these new compounds were investigated. It was seen to be obtained the compounds more economically with the method used.

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Section: Synthesis and Characterizationmentioning

confidence: 82%

Practical synthesis, characterization and photo-physical properties of metallophthalocyanines bearing benzhydryloxy substituents

Ağırtaş¹,

Öndeş²,

Cabir

2018

International Journal of Chemistry and Technology

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“…Finally, the carrier losses were evaluated by measuring the interfacial carrier recombination kinetics as reported previously. [33,34,[41][42][43][44][45][46][47][48] The charge extraction of 1a-b is depicted in Figure 6a and was determined by subtracting the contribution of the geometrical capacitance. The total extracted charges are shown in the Supporting Information ( Figure S20), where the geometric contribution is indicated by a straight line and the calculated values are 80 and 64 nF cm -2 for 1a and 1b, respectively.…”

Section: Theoretical Calculationsmentioning

confidence: 99%

High photo-current in solution processed organic solar cells based on a porphyrin core A-π-D-π-A as electron donor material

Montcada

Arrechea

Molina‐Ontoria

et al. 2016

Organic Electronics

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Two new conjugated acceptor-donor-acceptor (A--D--A) molecules with a porphyrin core linked by ethynylene bridges to two thiophene (1a) or thienylenevinylenethiophene (1b) units and both capped by N-ethylrhodanine have been synthesized. These compounds were used as the main electron donor moieties for bulk heterojunction small molecule organic solar cells (BHJ-SMOSC). The optimized devices, with PC71BM as the main electron acceptor molecule, show remarkable short circuit currents, up to 13.2 mA/cm 2 , an open circuit voltage of around 0.85 V, and power conversion efficiencies up to 4.3% under 100 W/cm 2. The External Quantum Efficiency (EQE), Atomic Force Microscopy (AFM), hole mobility, Photo-Induced Charge Extraction (PICE) and Photo-Induced Transient Photo-Voltage (PIT-PV) were analyzed in devices based on 1a and 1b in order to account for differences in the final performance of the two molecules. The PIT-PV decays showed slower recombination kinetics for devices fabricated with 1b. Moreover, the EQE was greater for 1b and this is ascribed to the better nanomorphology, which allows better charge collection before carrier recombination takes place.

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“…The application of X-ray diffraction (XRD) analysis is necessary to fully characterize the crystallite phase and orientation information, which is crucial in device fabrication [10]. To accomplish this goal, grazing incidence X-ray diffraction (GIXRD) has been used, since it offers more direct information than, e.g., selected area electron diffraction performed by transmission electron microscopy [11], where the crystal structure and orientation cannot be obtained without the substrate removal. In addition, a two-dimensional (2-D) area detector has been employed here, to obtain more complete crystal information than the diffraction intensity versus 2θ plot [12] where crystallite orientation cannot be obtained as efficiently.…”

Section: Open Accessmentioning

confidence: 99%

Phase and Texture of Solution-Processed Copper Phthalocyanine Thin Films Investigated by Two-Dimensional Grazing Incidence X-Ray Diffraction

et al. 2011

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Abstract:The phase and texture of a newly developed solution-processed copper phthalocyanine (CuPc) thin film have been investigated by two-dimensional grazing incidence X-ray diffraction. The results show that it has β phase crystalline structure, with crystallinity greater than 80%. The average size of the crystallites is found to be about 24 nm. There are two different arrangements of crystallites, with one dominating the diffraction pattern. Both of them have preferred orientation along the thin film normal. Based on the similarities to the vacuum deposited CuPc thin films, the new solution processing method is verified to offer a good alternative to vacuum process, for the fabrication of low cost small molecule based organic photovoltaics.

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Charge transfer reactions in near IR absorbing small molecule solution processed organic bulk-heterojunction solar

Cited by 34 publications

References 48 publications

Practical synthesis, characterization and photo-physical properties of metallophthalocyanines bearing benzhydryloxy substituents

Practical synthesis, characterization and photo-physical properties of metallophthalocyanines bearing benzhydryloxy substituents

High photo-current in solution processed organic solar cells based on a porphyrin core A-π-D-π-A as electron donor material

Phase and Texture of Solution-Processed Copper Phthalocyanine Thin Films Investigated by Two-Dimensional Grazing Incidence X-Ray Diffraction

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