Active Morphology Control for Concomitant Long Distance Spin Transport and Photoresponse in a Single Organic Device

Sun, Xiangnan; Bedoya-Pinto, Amílcar; Mao, Zupan; Gobbi, Marco; Wu, Yan; Guo, Yunlong; Atxabal, Ainhoa; Llopis, Roger; Yu, Gui; Liu, Yunqi; Chuvilin, Andrey; Casanova, Fèlix; Hueso, Luis E.

doi:10.1002/adma.201503831

Cited by 85 publications

(115 citation statements)

References 35 publications

(117 reference statements)

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“…S1 (22)]. We obtained reproducible results for more than 10 samples, in part by using a leaky AlO x barrier (semi-oxidized Al) and a low-temperature molecular growth process (23,24) [a rigid-band energy map of the MSP device is shown in fig. S1; device fabrication details are included in the supplementary materials (22)].…”

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confidence: 82%

“…In our device, as in conventional spin valves, one of the FM materials (here, Co) injects spin-polarized carriers into the semiconductor layer, and the other FM layer is the spin detector. If the spin polarization of the electrical carriers is preserved across the C 60 layer, the electrical current flow changes depending on the relative orientation of the magnetization of the FM layers (20)(21)(22)(23)(24)(25)(26). This change in electric current under the application of a magnetic field can be denoted as magnetocurrent (MC) and defined as MC (in percent) = (I P -I AP )/I AP × 100, where I P and I AP are the currents for parallel and antiparallel orientations of the magnetization, respectively.…”

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confidence: 99%

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A molecular spin-photovoltaic device

Sun

Vélez

Atxabal

et al. 2017

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We fabricated a C fullerene-based molecular spin-photovoltaic device that integrates a photovoltaic response with the spin transport across the molecular layer. The photovoltaic response can be modified under the application of a small magnetic field, with a magnetophotovoltage of up to 5% at room temperature. Device functionalities include a magnetic current inverter and the presence of diverging magnetocurrent at certain illumination levels that could be useful for sensing. Completely spin-polarized currents can be created by balancing the external partially spin-polarized injection with the photogenerated carriers.

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confidence: 82%

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confidence: 99%

A molecular spin-photovoltaic device

Sun

Vélez

Atxabal

et al. 2017

Science

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“…Molecular spintronics has not yet really taken advantage of the properties for which molecules are truly unique: their responsivity to external electrical or optical stimuli, and their intrinsic physical and chemical functionality [95][96][97][98][99] . The connection of these properties with spinterfaces is probably the most proficuous way forward to explore and exploit phenomena that are otherwise unreachable with current spintronic systems.…”

Section: Looking Ahead: Active Molecular Spinterfacesmentioning

confidence: 99%

Activating the molecular spinterface

2017

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The miniaturization trend in the semiconductor industry has led to the understanding that interfacial properties are crucial for device behaviour. Spintronics has not been alien to this trend, and phenomena such as preferential spin tunnelling, the spin-to-charge conversion due to the Rashba-Edelstein effect and the spin-momentum locking at the surface of topological insulators have arisen mainly from emergent interfacial properties, rather than the bulk of the constituent materials. In this Perspective we explore inorganic/molecular interfaces by looking closely at both sides of the interface. We describe recent developments and discuss the interface as an ideal platform for creating new spin effects. Finally, we outline possible technologies that can be generated thanks to the unique active tunability of molecular spinterfaces.

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“…In another study, Sun et al successfully constructed a novel photoresponsive molecular spintronic device by introducing the photoconductivity property of the fluorinated copper phthalocyanine (F 16 CuPc) into MSV, with a structure of Co/AlO x /F 16 CuPc/NiFe, which clearly shows four output states responding to the magnetic field and light irradiation at RT (Figure c) . A special morphology‐controlled growth of molecular layer plays important role during the device fabrication in ensuring reliable and efficient spin inject–transport process, and therefore the spin transport distance can even reach 180 nm at RT.…”

Section: Parallel‐type Functional Molecular Spintronic Devicesmentioning

confidence: 99%

Recent Advances in Molecular Spintronics: Multifunctional Spintronic Devices

et al. 2019

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a new discipline. According to many outstanding contributions, [5][6][7][8][9] it has already been proven to be a very important and prospective route to promote the progress in this emerging field by making use of the special merits of molecular semiconductors and spinterface, including mechanically flexibility, [10] abundant photoelectric properties, [11] ferroelectric characteristics, [12] as well as magnetic exchange interaction at the interface. [13] Nowadays, multifunction molecular spintronic devices have gradually attracted attention from various research fields. For instance, spin organic lightemitting diode [11] and molecular spin photovoltaic device, [14] which show brand-new device functions, completely distinguished with the common spintronic device, have been first achieved recently by simply integrating the optical-electrical properties of molecules with spin valve, a prototypical spintronic device. Under the rewarding background of the thriving research on molecular semiconductors and fundamental of spintronic devices in the past decades, the study of multifunctional spintronic devices not only conforms to the development trend but also provides a new opportunity for innovative research in both molecular science and spintronics.Molecular spin valve (MSV), a spintronic device, whereby a molecular semiconductor layer is sandwiched between two ferromagnetic (FM) electrodes (Figure 1a), [8,[15][16][17][18] is considered to be the ideal bed for exploiting multifunctional applications. Herein, recent advances of multifunctional molecular spintronic devices, mostly based on MSV configuration, are systematically reviewed. First, recent studies regarding paralleland interactive-type functional molecular spintronic devices are summarized and classified according to the relationship between the working mechanisms. Subsequently, the latest studies on pure-spin-current-type molecular spintronic devices are discussed. Finally, a short summary and future prospects regarding this field are proposed. Parallel-Type Functional Molecular Spintronic DevicesWhen functional molecular semiconductor or spinterfacial engineering is employed in MSV, novel device functions can be created due to molecular properties or introduced spinterfacial effect. If the novel functions as well as the magnetic The field of spintronics has triggered an enormous revolution in information storage since the first observation of giant magnetoresistance (GMR). Molecular semiconductors are characterized by having very long spin relaxation times up to milliseconds, and are thus widely considered to hold immense potential for spintronic applications. Along with the development of molecular spintronics, it is clear that the study of multipurpose spintronic devices has gradually grown into a new research and development direction. The abundant photoelectric properties of molecular semiconductors and the intriguing functionality of the spinterface, together with novel designs of device structures, have promoted the integration of multiple functions a...

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Active Morphology Control for Concomitant Long Distance Spin Transport and Photoresponse in a Single Organic Device

Cited by 85 publications

References 35 publications

A molecular spin-photovoltaic device

A molecular spin-photovoltaic device

Activating the molecular spinterface

Recent Advances in Molecular Spintronics: Multifunctional Spintronic Devices

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