Incomplete hetero-structure molecular layer enhancing room-temperature spin-photovoltaic performances

Qin, Yang; Gu, Xianrong; Zhang, Yixiao; Hu, Shunhua; Guo, Ankang; Zhang, Rui; Meng, Ke; Yang, Tingting; Zhang, Cheng; Lu, Shuhang; Yang, Xueli; Guo, Lidan; Zhu, Xiangwei; Zhang, Jianqi; Lü, Kun; Wei, Zhixiang; Sun, Xiangnan

doi:10.1016/j.nantod.2023.101763

Cited by 8 publications

(15 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Spin-dependent electron transport properties can be manipulated by both light and magnetic fields. − It is found that HOIPs have a prominent near-infrared circularly polarized light response, which can be used as the detector of circularly polarized light. , Magneto-optical detection showed that the spin-polarized photocurrent of chiral HOIPs could be regulated by the external magnetic field under light illumination . In 2021, Kim et al used HOIPs to produce spin-polarized carriers, making the room-temperature spin light-emitting diode possible .…”

Section: Resultsmentioning

confidence: 99%

Spin Control and Multifunctional Photocurrent Switch in Chiral Hybrid Organic–Inorganic Perovskites

Xiao

Wang

et al. 2023

Chem. Mater.

View full text Add to dashboard Cite

Chiral-induced spin selectivity effect provides a new strategy for manipulating electron spin, which has potential applications in various spin-related fields. Here, the spin-selective electronic transport and photocurrent response of (R,S-MBA)2PbI4 are investigated systematically by first-principles calculations. The minimum periodic chiral hybrid system has stable spin filtering ability. Different from achiral magnetic tunnel junctions (MTJs), the resistance of chiral MTJs depends on the chirality of (R,S-MBA)2PbI4 and magnetization arrangement of ferromagnetic electrodes. Additionally, the photon energy and magnetization arrangement of electrodes can be used to switch the spin channel and photocurrent direction. At a photon energy of 3.0 eV, chiral MTJs can transfer from separating spin into outputting highly spin-polarized photocurrent by changing the magnetization arrangement of electrodes. Chiral spin control and multifunctional photocurrent switch of Fe/(R,S-MBA)2PbI4/Fe MTJs provide important information for the design of chiral spintronic and nanoscale electronic devices.

show abstract

Section: Resultsmentioning

confidence: 99%

Spin Control and Multifunctional Photocurrent Switch in Chiral Hybrid Organic–Inorganic Perovskites

Xiao

Wang

et al. 2023

Chem. Mater.

View full text Add to dashboard Cite

show abstract

“…114 Thus, drawing on valuable experiences in the field of molecular photovoltaics, the heterostructure molecular layer, a popular structure that can break down the aforementioned structural weaknesses, has been employed in the research of MSPs. 109 Different from existing understanding, the complete heterostructure interface will block the spin-polarized carriers and thus make the device inoperable. In this case, the incomplete heterostructure molecular layer was firstly constructed via controlling the morphology of the molecular film and successfully applying it in an MSP, of which the heterostructure part greatly enhances the driving force of spinphotovoltaic interaction, while the single-layer part ensures effective spin transport.…”

Section: Spin-charge Interactive Functionalitiesmentioning

confidence: 99%

“…Besides the ultralong spin lifetime, MSCs also have a wealth of chemically adjustable charge-related optoelectronic properties, such as luminescence and photovoltaic . In typical sandwich-like MSVs, these properties have been actively engaged in spin-related magnetic responses and thus have propelled the evolution of multifunctional molecular spintronics. ,− …”

Section: Challenges In Spin-related Functionalitiesmentioning

confidence: 99%

Section: Challenges In Spin-related Functionalitiesmentioning

confidence: 99%

“…Additionally, employing the photovoltaic MSCs as the spin transport layer, under the combined action of light irradiation and external magnetic field, the spin-related magnetic response and the charge-related photovoltaic effect can be coupled into the same spintronic device (Figure a), and dubbed as the molecular spin-photovoltaic device (MSP). − Another prominent achievement of MSP is that the output spin-polarized signals can be purified and amplified by the photovoltaic effect, which suggests a unique functionality for supplying the fully spin-polarized current (Figure b). According to existing research results, the modulation range of output spin-polarized signals is strongly dependent on the strength of the photovoltaic effect, and room-temperature operation of MSP that is of vital importance for practical application is closely bound with the performance of the spin-related magnetic response.…”

Section: Challenges In Spin-related Functionalitiesmentioning

confidence: 99%

See 2 more Smart Citations

Challenges and Prospects of Molecular Spintronics

Gu,

Guo,

Qin

et al. 2023

Precision Chemistry

Self Cite

View full text Add to dashboard Cite

Molecular spintronics, as an emerging field that makes full use of the advantage of ultralong room-temperature spin lifetime and abundant electrical-optical-magnetic properties of molecular semiconductors, has gained wide attention for its great potential for further commercial applications. Despite the significant progress that has been made, there remain several huge challenges that limit the future development of this field. This Perspective provides discussions on the spin transport mechanisms and performances of molecular semiconductors, spinterface effect, and related spin injection in spintronic devices, and current spin-charge interactive functionalities, along with the summarization of the main obstacles of these aspects. Furthermore, we particularly propose targeted solutions, aiming to enhance the spin injection and transport efficiency by molecular design and interface engineering and explore diverse spinrelated functionalities. Through this Perspective, we hope it will help the spintronic community identify the research trends and accelerate the development of molecular spintronics.

show abstract

Interface Engineering for Enhancing Air‐Stable Spin‐Charge Interaction in Molecular Spin‐Photovoltaic Devices

Hu,

Qin,

et al. 2024

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Molecular semiconductors (MSCs) are known as ideal candidates for constructing room‐temperature spin‐charge interactive devices due to their long spin lifetimes and abundant photoelectric properties. These devices can achieve novel and valuable functionalities such as room‐temperature supply units of fully spin‐polarized current. Unfortunately, their performances (sub‐0.1 nA) remain unsatisfactory due to limited charge and spin injection efficiency, which can hardly be improved despite great efforts thus far. Herein, from the theoretical side, an interfacial tunnel layer with precisely‐controlled barrier in spintronic devices may simultaneously enhance spin and charge injection. Accordingly, a solution‐processed small molecule with smooth morphology and amorphous structure is introduced to form a uniform and well‐controllable barrier in molecular spin‐photovoltaic devices. By modulating the thickness to effectively control the barrier, both spin and charge injection efficiency increase by > 150%. Thus, the spin‐charge interactive functionalities as supply units of fully spin‐polarized current have also been significantly improved than the current record at room temperature, the output fully spin‐polarized current (>2 nA) is 1200%‐larger, and the output power increases by > 50 times. Moreover, the interface‐modified spintronic devices exhibit excellent stability even after 70 days of exposure to air, which is essential for practical applications in the future.

show abstract

Incomplete hetero-structure molecular layer enhancing room-temperature spin-photovoltaic performances

Cited by 8 publications

References 50 publications

Spin Control and Multifunctional Photocurrent Switch in Chiral Hybrid Organic–Inorganic Perovskites

Spin Control and Multifunctional Photocurrent Switch in Chiral Hybrid Organic–Inorganic Perovskites

Challenges and Prospects of Molecular Spintronics

Interface Engineering for Enhancing Air‐Stable Spin‐Charge Interaction in Molecular Spin‐Photovoltaic Devices

Contact Info

Product

Resources

About