Photoconductivity of sublimated rubrene films during oxidation. The magnetic field effect

Frankevich, E. L.; Tribel, M. M.; Soroltk, I. A.

doi:10.1002/pssb.2220770126

Cited by 18 publications

(1 citation statement)

References 14 publications

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“…Frankevich has explained the magnetoconductance of photocurrent in terms of different g factors of hole and electron, operating on a loosely bound charge DD pair that might be Wannier exciton [102]. Magnetic field effects due to the DD pair mechanism seem to be more clearly observed in interface dynamics between different organic semiconductors [103][104][105][106], because the electron-hope pair, which might be sometimes called charge transfer exciton, is dominant species at the interface just after photoexcitation. For example, the intensity of the exciplex photoluminescence of electron-hole pair in the thin tetracene films on anthracene is reduced by a few percent by applying magnetic field of a few mT [103].…”

Section: Mr Based On the Dd Pair Mechanismmentioning

confidence: 99%

Molecular spintronics

Shiraishi

Ikoma

2011

Physica E: Low-dimensional Systems and Nanostructures

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Molecular spintronics is recognized to as an attractive new research direction in a field of spintronics, following to metallic spintronics and inorganic semiconductor spintronics, and attracts many people in recent decades. The purpose of this manuscript is to describe the history of molecular spintronics by introducing important achievements and to show the current status of this field. In addition, the authors briefly introduce several theories for implementing studies in molecular spintronics.

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Section: Mr Based On the Dd Pair Mechanismmentioning

confidence: 99%

Molecular spintronics

Shiraishi

Ikoma

2011

Physica E: Low-dimensional Systems and Nanostructures

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Paramagnetic Resonance in Electron-Hole Pairs in C60 Single Crystals Detected by Photoconductivity Measurements

Ossipyan

Golovin

Lopatin

et al. 2001

phys. stat. sol. (b)

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Introduction It is well known that the evolution of electron-hole pairs generated by light in a number of aromatic organic semiconductors is sensitive to a static magnetic field (MF) with induction B < 1 T [1--5]. Transitions in the spin state of the pairs under the action of MF results in changes of their macroscopic material properties: dark conductivity and photoconductivity [1--3], luminescence and fluorescence [4,5]. A number of electronic properties (width of band gap, polyaromaticity, closed p-electron shells, etc.) of a new promising material --fullerite C 60 --are very similar to those of polyacenes investigated in [1--5]. A proof of the temperature-independent hopping conductivity has been presented in [6]. The effect of a static MF with B < 1 T on the photoconductivity of C 60 has been published in [7]. The above mentioned facts suggest that the spin state of electronhole pairs in fullerites can also play an important role in determining their photoelectronic properties. As a rule the duration of the spin-lattice relaxation in electron-hole pairs is much longer than their lifetime in such materials, and MF mixes singlet and triplet spin states of the light induced carriers sooner than the perturbation of these states by thermal fluctuations. This explains the possibility to observe an up to 10% increase of photocurrent in a "weak" MF B < 1 T at room temperature [8]. The main goal of this work was to investigate the possibility for control over spin states of charge carriers and photoconductivity of C 60 by using a magnetic field.

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Magnetic‐Resonant Modulation of Photoconductivity of Crystalline Charge Transfer Complexes. Anthracene‐Tettacyanbenzene

Frankevich

Tribel

Sokolik

et al. 1978

Physica Status Solidi (b)

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A magnetic-resonant modulation of the photoconductivity of polycrystalline samples of CT complex anthracene-TCNR is observed. The modulation is due to microwave induced transitions between Zeeman sublevel8 of the excited triplet CT state. The magnetic resonance spectrum of the CT triplet state is registered, the lifetime of the latter is estimated to be about 10-8 s. Switching-on the resonant microwave field decreases the photoconductivity. The nonresonant effect of the permanent magnetic field on photocurrent and fluorescence of anthracene-TCNB crystals is investigated. A scheme is given representing the processes of the electronic excitation energy conversion in the anthracene-TCNB CT complex.Ha6nmnanacb Mal'HHTHO-Pe30HaHCHaH MOHyJIRUHH @OTOIIpOBOn&iMOCTH IIonaKpHcTaJI-JIHgeCHHX o6pa3uo~ KOMIIJleKCa C IIepeHOCOM 3apRna aHTpaUeH-TeTpaUElaH6eH3OJI, CBII3aHHaR C OCy4eCTBJIeHHeM CBY-noneM pe30HaHCHbIX IIepeXOAOB MeXny 3eeMaHOB-CKHMH IIOEYPOBHHMEI BO36yXneHHOrO TpHIIJIeTHOI'O COCTOIIHHII C IIepeHOCOM 3apHna. X H a H H OKOJIO8 . BHnmeHue pe3OHaHCHOfi CBY-MOIIJHOCTH YMeHLIIIaJIO BeJIHWlHy @OTOIIPOBOAHMOCTH. ~CCJleAOBaHO TaKXe Hepe3OHaHCHOe BJIHRHHe CTaUkiOHaPHOrO MaI'HHTHOI'O IIOJIR Ha @OToIIpOBOLWi MOCTL H @JIyOpeCUeHUEIIO KpHCTaJIJIOB aHTpaUeH-TeTpaUHaIIH6eH3OJl. npe&llOXeHa CXeMa IIpOUeCCOB C YWl CTHeM 3JIeKTpOHHO-BO36y)K~eH-HbIX H HOHH3HPOBaHHbIX COCTOIIHElfi B HCCJIeEOBaHHblX KpHCTaJlJIaX. 3 a p e r~c~p~p o s a~ cnemp MarHmHoro p e 3 o~a~c a 3~0 r o cocTonnm, n~em4ero sperm

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Photoconductivity of sublimated rubrene films during oxidation. The magnetic field effect

Cited by 18 publications

References 14 publications

Molecular spintronics

Molecular spintronics

Paramagnetic Resonance in Electron-Hole Pairs in C60 Single Crystals Detected by Photoconductivity Measurements

Magnetic‐Resonant Modulation of Photoconductivity of Crystalline Charge Transfer Complexes. Anthracene‐Tettacyanbenzene

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