CN103187521A - 一种有机磁敏二极管 - Google Patents
一种有机磁敏二极管 Download PDFInfo
- Publication number
- CN103187521A CN103187521A CN2011104556408A CN201110455640A CN103187521A CN 103187521 A CN103187521 A CN 103187521A CN 2011104556408 A CN2011104556408 A CN 2011104556408A CN 201110455640 A CN201110455640 A CN 201110455640A CN 103187521 A CN103187521 A CN 103187521A
- Authority
- CN
- China
- Prior art keywords
- organic
- magnetoresistance
- cupc
- ptcda
- film
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Hall/Mr Elements (AREA)
Abstract
本发明提出了一种有机磁敏二极管,属于微电子器件与传感器技术领域,有望在磁场测量和探测方面得到广泛应用。其结构为铟锡氧化物(ITO)/酞菁铜(CuPc)或苝四甲酸二酐(PTCDA)/Al。这种有机磁敏二极管具有磁致电阻效应,其磁致电阻的大小随外加磁场的增强而增大,其中以PTCDA为有机层的器件(PTCDA器件)的磁致电阻为负,而以CuPc为有机层的器件(CuPc器件)的磁致电阻为正。在室温下,外加磁场为100mT时,PTCDA器件和CuPc器件的磁致电阻可分别达到-30%和20%以上。
Description
技术领域
本发明设计了一种有机磁敏二极管,属于微电子器件与传感器技术领域,有望在磁场测量和探测方面得到广泛应用。
背景技术
有机半导体材料主要由碳、氢、氮等轻元素组成,它们的自旋-轨道耦合作用较弱,使得有机半导体中电子的自旋弛豫时间较长,因此与自旋相关的扩散长度较大,使其具有独特的磁致电阻效应。磁致电阻效应是指器件的电阻随外加磁场的强度变化。磁致电阻(MR)定义为器件处在有磁场的空间时的微分电阻相对于处在无磁场的空间时的微分电阻的增量ΔR(可正可负)与处在无磁场空间时的电阻的比率,可表示为:
其中R(B)和R(0)分别是器件处在有磁场的空间和无磁场的空间时所呈现的微分电阻。
发明内容
相对于无机磁敏器件,有机磁敏器件的一个主要优点是它不要求器件材料具有磁性,选材更灵活,可以制作在廉价的柔性衬底上。有机磁敏二极管是一种很少见的在室温下,在很小的磁场作用下就能得到磁致电阻的一种有机磁敏器件。本发明选择铟锡氧化物(ITO)和铝分别作为阳极和阴级,酞菁铜(CuPc)或苝四甲酸二酐(PTCDA)作为有机层制成有机磁敏二极管,其结构如图1所示。这种有机磁敏二极管具有很高的磁致电阻,在100mT的磁场下,以PTCDA和CuPc为有机层的磁敏二极管的磁致电阻可分别达到-30%和+20%以上。
附图说明
图1是有机磁敏二极管的结构示意图,ITO薄膜和铝薄膜分别作为阳极和阴极。当选用镀有ITO的玻璃为衬底时,只需要用真空蒸发方法在其上依次制备有机半导体(CuPc或PTCDA)薄膜和铝薄膜。当选用其它材料作为衬底时,需要先在衬底上用溅射等方法制备一层ITO薄膜,方块电阻10~100Ω;再用真空蒸发方法制备有机半导体薄膜(CuPc或PTCDA)和铝薄膜。
具体实施方式
当选用镀有ITO的玻璃为衬底时,器件制备过程为:
a)将镀有ITO的玻璃衬底用去污粉洗涤,然后再先后用去离子水、丙酮、乙醇各超声清洗15分钟,放入烘箱中烘干;
b)在ITO的玻璃衬底上用真空蒸发方法制备有机薄膜(PTCDA或CuPc);
c)用真空蒸发方法制备Al薄膜,电极面积通过掩模板限定;
d)对器件进行封装。
如果选用其它材料作为衬底,需要先在衬底上用溅射等方法制备ITO薄膜,再采用b)~d)的步骤完成器件制备。
Claims (5)
1.一种有机磁敏二极管,其特征在于它由镀有铟锡氧化物(ITO)薄膜(阳极)的衬底、有机半导体薄膜和Al薄膜(阴极)组成。
2.权利要求1所述的有机磁敏二极管,其特征在于它的阳极、有机薄膜和阴极都无磁性。
3.权利要求1所述的有机磁敏二极管,其特征在于有机薄膜为酞菁铜(CuPc)和苝四甲酸二酐(PTCDA)。
4.权利要求1所述的有机磁敏二极管,其特征在于在室温下具有磁致电阻效应。当在其阳极和阴极之间施加正电压时,其微分电阻的大小随外加磁场强度的大小而单调变化。
5.权利要求1所述的有机磁敏二极管,其特征在于其磁致电阻的正负与有机材料有关。有机薄膜为CuPc时磁致电阻为正,而有机薄膜为PTCDA时,磁致电阻则为负。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011104556408A CN103187521A (zh) | 2011-12-31 | 2011-12-31 | 一种有机磁敏二极管 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011104556408A CN103187521A (zh) | 2011-12-31 | 2011-12-31 | 一种有机磁敏二极管 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN103187521A true CN103187521A (zh) | 2013-07-03 |
Family
ID=48678588
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2011104556408A Pending CN103187521A (zh) | 2011-12-31 | 2011-12-31 | 一种有机磁敏二极管 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103187521A (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104681714A (zh) * | 2015-01-13 | 2015-06-03 | 兰州大学 | 基于硅基二极管的新型磁传感器及制备方法 |
US10821486B2 (en) | 2015-11-05 | 2020-11-03 | Airbus Defence and Space GmbH | Microelectronic module for cleaning a surface, module array, and method for cleaning a surface |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5614727A (en) * | 1995-06-06 | 1997-03-25 | International Business Machines Corporation | Thin film diode having large current capability with low turn-on voltages for integrated devices |
US20030112564A1 (en) * | 2001-11-27 | 2003-06-19 | Seagate Technology Llc | Magnetoresistive element using an organic nonmagnetic layer |
CN101783395A (zh) * | 2009-01-20 | 2010-07-21 | 京东方科技集团股份有限公司 | 有机电致发光器件及其制造方法 |
CN101858961A (zh) * | 2010-05-04 | 2010-10-13 | 西南大学 | 一种双参数、高灵敏度的有机小分子半导体薄膜磁性传感器 |
CN101937975A (zh) * | 2010-08-20 | 2011-01-05 | 电子科技大学 | 一种有机/无机复合发光二极管及其制备方法 |
CN102290530A (zh) * | 2011-09-13 | 2011-12-21 | 西南大学 | 一种高磁场响应的有机发光二极管 |
-
2011
- 2011-12-31 CN CN2011104556408A patent/CN103187521A/zh active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5614727A (en) * | 1995-06-06 | 1997-03-25 | International Business Machines Corporation | Thin film diode having large current capability with low turn-on voltages for integrated devices |
US20030112564A1 (en) * | 2001-11-27 | 2003-06-19 | Seagate Technology Llc | Magnetoresistive element using an organic nonmagnetic layer |
CN101783395A (zh) * | 2009-01-20 | 2010-07-21 | 京东方科技集团股份有限公司 | 有机电致发光器件及其制造方法 |
CN101858961A (zh) * | 2010-05-04 | 2010-10-13 | 西南大学 | 一种双参数、高灵敏度的有机小分子半导体薄膜磁性传感器 |
CN101937975A (zh) * | 2010-08-20 | 2011-01-05 | 电子科技大学 | 一种有机/无机复合发光二极管及其制备方法 |
CN102290530A (zh) * | 2011-09-13 | 2011-12-21 | 西南大学 | 一种高磁场响应的有机发光二极管 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104681714A (zh) * | 2015-01-13 | 2015-06-03 | 兰州大学 | 基于硅基二极管的新型磁传感器及制备方法 |
US10821486B2 (en) | 2015-11-05 | 2020-11-03 | Airbus Defence and Space GmbH | Microelectronic module for cleaning a surface, module array, and method for cleaning a surface |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Wang et al. | Energy-efficient, fully flexible, high-performance tactile sensor based on piezotronic effect: Piezoelectric signal amplified with organic field-effect transistors | |
Kumaresan et al. | Omnidirectional Stretchable inorganic‐material‐based electronics with enhanced performance | |
CN106449968B (zh) | 一种产生自旋极化的石墨烯器件及其制备方法 | |
Song et al. | Twistable nonvolatile organic resistive memory devices | |
Aleksandrova et al. | Highly flexible, conductive and transparent PEDOT: PSS/Au/PEDOT: PSS multilayer electrode for optoelectronic devices | |
Kim et al. | Surface property of indium tin oxide (ITO) after various methods of cleaning | |
Wang et al. | Electric field-tunable giant magnetoresistance (GMR) sensor with enhanced linear range | |
Wang et al. | Spin‐polarized electronic transport through ferromagnet/organic–inorganic hybrid perovskite spinterfaces at room temperature | |
Tsuji et al. | Dual-gate low-voltage organic transistor for pressure sensing | |
Kim et al. | Enhanced tunnel magnetoresistance and electric-field effect in CoFeB/MgO/CoFeB perpendicular tunnel junctions with W underlayer | |
Huang et al. | Magnetic‐Sensitive Crack Sensor with Ultrahigh Sensitivity at Room Temperature by Depositing Graphene Nanosheets upon a Flexible Magnetic Film | |
CN103187521A (zh) | 一种有机磁敏二极管 | |
Krinichnyi et al. | Light-induced EPR study of charge transfer in P3HT/PC71BM bulk heterojunctions | |
Wu et al. | Flexible mott synaptic transistor on polyimide substrate for physical neural networks | |
Han et al. | High-sensitivity tunnel magnetoresistance sensors based on double indirect and direct exchange coupling effect | |
Raval et al. | Low-operating-voltage operation and improvement in sensitivity with passivated OFET sensors for determining total dose radiation | |
JP5578436B2 (ja) | 電子スピン測定装置及び測定方法 | |
Zanettini et al. | High conductivity organic thin films for spintronics: the interface resistance bottleneck | |
Guo et al. | Fröhlich polaron effect in flexible low-voltage organic thin-film transistors gated with high-k polymer dielectrics | |
Peng et al. | Photoelectron-induced quantitative regulation of ferromagnetism in Permalloy at room temperature for photovoltaic flexible spintronics | |
Sun et al. | Sign reversal of magnetoresistance and inverse spin Hall effect in doped conducting polymers | |
Shinozaki et al. | Free-layer size dependence of anisotropy field in nanoscale CoFeB/MgO magnetic tunnel junctions | |
Zheng et al. | Dynamical behavior of pure spin current in organic materials | |
Kim et al. | Patchable thin-film strain gauges based on pentacene transistors | |
Kim et al. | Glycerol-doped poly (3, 4-ethylenedioxy-thiophene): Poly (styrene sulfonate) buffer layer for improved power conversion in organic photovoltaic devices |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C05 | Deemed withdrawal (patent law before 1993) | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130703 |