Doped organic single-crystal photovoltaic cells

Kikuchi, Masatoshi; Makmuang, Sureerat; Izawa, Seiichiro; Wongravee, Kanet; Hiramoto, Masahiro

doi:10.1016/j.orgel.2018.10.015

Cited by 17 publications

(19 citation statements)

References 21 publications

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“…Through rigorous tuning of the evaporation rates of the 'host' molecule and the dopant, introduction of FeCl 3 molecules as an acceptor into the bulk crystal lattice of rubrene [ Figure 1a] at accurately controlled concentrations down to the weight ratio of 1 ppm and of uniform spatial distributions was successfully achieved in that work [15]. Moreover, a single crystal homojunction was fabricated by doping of donor and acceptor molecules in either side of the homoepitaxial rubrene single crystal, and it was actually shown to exhibit a photovoltaic response [18].…”

Section: Introductionmentioning

confidence: 99%

Electronic and Crystallographic Examinations of the Homoepitaxially Grown Rubrene Single Crystals

et al. 2020

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Homoepitaxial growth of organic semiconductor single crystals is a promising methodology toward the establishment of doping technology for organic opto-electronic applications. In this study, both electronic and crystallographic properties of homoepitaxially grown single crystals of rubrene were accurately examined. Undistorted lattice structures of homoepitaxial rubrene were confirmed by high-resolution analyses of grazing-incidence X-ray diffraction (GIXD) using synchrotron radiation. Upon bulk doping of acceptor molecules into the homoepitaxial single crystals of rubrene, highly sensitive photoelectron yield spectroscopy (PYS) measurements unveiled a transition of the electronic states, from induction of hole states at the valence band maximum at an adequate doping ratio (10 ppm), to disturbance of the valence band itself for excessive ratios (≥ 1000 ppm), probably due to the lattice distortion.

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Section: Introductionmentioning

confidence: 99%

Electronic and Crystallographic Examinations of the Homoepitaxially Grown Rubrene Single Crystals

et al. 2020

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“…4,[6][7][8] Currently, various doped organic semiconductors have been developed and demonstrated potential applications in devices of organic field-effect transistors (OFETs), [9][10][11] organic lightemitting diodes (OLEDs), 12,13 organic light-emitting transistors (OLETs), 8,14 organic thermoelectricity, [15][16][17] and other optoelectronic devices. [18][19][20][21][22][23] Basically, doping in organic semiconductors can be distinguished into two different aspects based on their induced effects: electrical doping and host-guest doping. In the electrical doping system, charge transfer occurs between dopants and organic semiconductors.…”

Section: Introductionmentioning

confidence: 99%

Molecular doped organic semiconductor crystals for optoelectronic device applications

et al. 2020

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“…Molecular single crystals are rapidly emerging as building blocks for next-generation optoelectronics, and these prospects are based on their long-range structural order and anisotropy, tunability of their structures by small chemical variations, and cost-effectiveness. [1][2][3][4] These assets favor organic crystals for a broad range of applications, including light-emitting devices, [5] organic field-effect transistors, [6] photodetectors, [7] photovoltaic cells, [8] thermochemiluminescent materials, [9] solid-state lasers, [10] and optical waveguides. [11][12][13] This latter research direction is particularly prolific, given the increasing number of challenges for secure transfer of information in multiple waveguides, a feature that is of paramount importance for fabrication of optical circuits, is currently only possible by mechanical coupling of different crystals in tip-to-tip or crossed geometries.…”

Section: Introductionmentioning

confidence: 99%

Sequencing and Welding of Molecular Single‐Crystal Optical Waveguides

Catalano

Berthaud

Dushaq

et al. 2020

Adv Funct Materials

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Molecular crystals are promising anisotropic optical transducing media for next‐generation optoelectronic microdevices that will be capable of secure transduction of information and impervious to external electromagnetic interference. However, their full potential has not been explored yet due to their poor processability, low mechanical compliance, pronounced brittleness and high proneness to cracking that often result in irrecoverable damage. These issues are detrimental to their ability to transduce light. Here, a novel strategy is presented based on 3D epitaxial crystal growth of organic/inorganic crystals based on charge‐assisted hydrogen bonds that can be used to efficiently weld broken molecular single‐crystalline optical waveguides and restore their light‐transducing capability. This approach can also be applied to prepare asymmetric multidomain crystalline heterostructures starting from isostructural molecular tectons, resulting in novel opto/electro/mechanical functionalities in the hybrid materials. It also removes an important obstacle toward wider application of molecular crystals in the next‐generation optoelectronics.

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Doped organic single-crystal photovoltaic cells

Cited by 17 publications

References 21 publications

Electronic and Crystallographic Examinations of the Homoepitaxially Grown Rubrene Single Crystals

Electronic and Crystallographic Examinations of the Homoepitaxially Grown Rubrene Single Crystals

Molecular doped organic semiconductor crystals for optoelectronic device applications

Sequencing and Welding of Molecular Single‐Crystal Optical Waveguides

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