甲基甲基酸盐共聚物与悬挂类桑组作为电阻式记忆器件的活性层
Danila S Odintsov1, Andrei A Gismatulin1, Inna K Shundrina1
1Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Russian Academy of Sciences, 630090, Novosibirsk, Russian Federation.
概括
一种新型的电活性共聚合物,聚MMA-co-ThS,表现出电色特性,并使得记忆器件切换成为可能. 由于其独特的充电传输机制,这种材料显示出先进电子应用的潜力.
科学领域:
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
背景情况:
- 电活性材料的开发对于先进的电子设备至关重要.
- 桑衍生物具有独特的电化学和光学特性.
- 共聚合允许调整特定应用的材料特性.
研究的目的:
- 合成和描述一种新型的电活性共聚合物:聚甲基酸-co-2-甲基基-1-) 甲基) -9H-硫-9-一) (聚MMA-co-ThS)).
- 研究聚MMA-co-ThS薄膜的电化学,电色和电荷传输特性.
- 通过检查其记忆行为,探索聚-MMA-co-ThS在记忆设备中的潜力.
主要方法:
- 使用激素聚合来合成聚MMA-co-ThS共聚合物.
- 聚合物的薄膜是在晶片上制造的,用于设备制造.
- 进行了电化学和电色测量以评估材料活性.
- 在不同的温度下分析了电流-电压特征,以确定电荷传输机制,利用纳西罗夫-格里特森科模型.
- 研究了n++/Si(100) /poly(MMA-co-ThS) /Al设备中的记忆切换行为.
主要成果:
- 合成的聚MMA-co-ThS共聚合物表现出良好的溶解性,热稳定性 (高达282°C) 和膜形成能力.
- 聚MMA-co-ThS) 薄膜表现出电化学和电色活性,形成长寿命的激素离子状态,在可见区域 (500-900 nm) 有光学吸收.
- 电影中的电荷传输被确定为一个多声机制,与纳西罗夫-格里特森科模型相一致,陷光学过渡能量Wopt = 1.8 eV,匹配于thioxanthone结构.
- 在n++/Si(100) /poly(MMA-co-ThS) /Al装置显示一个memristive效果,显示可逆的开启/关闭开关后初始形成周期.
结论:
- 合成的聚MMA-co-ThS共聚物具有显著的电化学和电色特性.
- 电荷传输机制很好地描述了声子辅助的道化,而硫类组则充当陷.
- 该材料表现出记忆性行为,表明其在非易失性存储器件中的应用潜力.
相关概念视频
02:48Ionic Bonding and Electron Transfer
Ions are atoms or molecules bearing an electrical charge. A cation (a positive ion) forms when a neutral atom loses one or more electrons from its valence shell, and an anion (a negative ion) forms when a neutral atom gains one or more electrons in its valence shell. Compounds composed of ions are called ionic compounds (or salts), and their constituent ions are held together by ionic bonds: electrostatic forces of attraction between oppositely charged cations and anions.
01:15Potentiometry: Membrane Electrodes
Membrane electrodes, also known as p-ion electrodes, use membranes that selectively interact with free analyte ions, generating a potential difference across the membrane. The resulting membrane potential, known as the asymmetry potential, is not zero even when analyte concentrations on both sides of the membrane are equal. The membrane's response is typically not selective to a single analyte but proportional to the concentration of all ions in the sample solution capable of interacting at the...
01:17Ion Exchange
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or basic...
01:25MOS Capacitor
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
01:28Ionic Association
The ionic association is the association of oppositely charged ions in an electrolyte solution to form ion pairs. Bjerrum defined ion pairs as two oppositely charged ions whose electrostatic attraction exceeds the thermal energy of the system, typically expressed as 2kT. Electrostatic attraction depends on ionic charge, separation distance, and the dielectric constant of the medium. Thermal energy, represented by kT, reflects the tendency of ions to move independently due to molecular motion.
01:23Mnemonic Devices
Mnemonic devices are cognitive tools that facilitate memory retention by linking new information to familiar patterns or organizational strategies. These techniques are beneficial for remembering complex or lengthy sets of information by simplifying and structuring them in easily retrievable ways.
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...
Acronyms
Acronyms are created by using the initial letters of a series of words to form a new word or phrase. This approach condenses complex information into a single, memorable entity. For example,...