炭素ベースの分子結合におけるイオン補助共振器の注入と電荷貯蔵
Mustafa Supur1, Shailendra K Saxena1, Richard L McCreery1
1Department of Chemistry, University of Alberta, Edmonton, Alberta T6G 2R3, Canada.
Journal of the American Chemical Society
|June 23, 2020
まとめ
この研究では,アセトニトリル蒸気中のリチウムフッ素 (LiF) の移動イオンを使用して,炭素/テトラフェニルポルフィリン交差点での充電貯蔵が強化されていることが示されています. この方法は,真空状態と比較して,可逆電荷貯蔵容量を大幅に増加させます.
科学分野:
- オーガニックの電子機器
- 材料科学
- 電気化学
背景:
- オーガニック半導体は 電子機器の発展の可能性を秘めています
- オーガニック・ジャンクションにおける電荷貯蔵メカニズムは,アプリケーションにとって極めて重要です.
- イオンスクリーニングは,電荷移転のダイナミクスに役割を果たします.
研究 の 目的:
- 新しい有機結合で共鳴電荷の注入と貯蔵を調査する.
- 電荷貯蔵の強化に移動イオンの効果を探求する.
- 炭素/テトラフェニルポルフィリン/LiF/炭素結合の性能を分析する.
主な方法:
- 大面積の炭素/テトラフェニルポルフィリン (TPP) /LiF/炭素結合の製造
- アセトニトリル (ACN) の蒸気を利用して移動イオンを提供する.
- 充電の注入を監視するためのインサイト光流測定.
- 周期的な電圧測定 (IVサイクル) で,電荷の蓄積を分析する.
主要な成果:
- イオンスクリーニングにより<+1Vで観測されたTPP分子への共振電子転送.
- 光電流で監視された TPP 基質カチオンの形成
- ACN蒸気で観測された持続的なファラダイク電流のピークは,電荷貯蔵を示しています.
- 逆電荷貯蔵は真空に比べて 78倍に増えました
結論:
- 有機結合の移動イオンは 逆電荷貯蔵を大幅に強化します
- イオンスクリーニングは,このような装置に共鳴電荷の注入を可能にするための鍵です.
- TPP/LiF/炭素の結合は,効率的な電荷貯蔵アプリケーションに希望を示しています.
さらに関連する動画
11:33All-electronic Nanosecond-resolved Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics
Published on: January 19, 2018
10.1K
05:39Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
Published on: August 2, 2019
10.1K
関連する概念動画
Double Resonance Techniques: Overview
588
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Spin decoupling is usually achieved by...
588
Metal-Semiconductor Junctions
779
The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...
779
Biasing of Metal-Semiconductor Junctions
473
Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
473
Induced Electric Dipoles
4.6K
A permanent electric dipole orients itself along an external electric field. This rotation can be quantified by defining the potential energy because the external torque does work in rotating it. Then, the potential energy is minimum at the parallel configuration and maximum at the antiparallel configuration. While the former is a stable equilibrium, the latter is an unstable equilibrium.
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
Since the absolute value of potential energy holds no physical meaning, its zero value can be chosen as per...
4.6K
P-N junction
997
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
997
Resonance and Hybrid Structures
24.1K
According to the theory of resonance, if two or more Lewis structures with the same arrangement of atoms can be written for a molecule, ion, or radical, the actual distribution of electrons is an average of that shown by the various Lewis structures.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
Resonance Structures and Resonance Hybrids
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N–O and N=O bonds.
24.1K
