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We report a charge based model to establish the analytical equation, describing the nature of capacitance-voltage ($C$-$V$) characteristics of organic solar cells under dark condition (or organic diodes) over a wide range of voltage,…

应用物理 · 物理学 2018-09-25 Prashanth Kumar Manda , Soumya Dutta

Capacitance-voltage (CV) measurements are a widely used technique in silicon detector physics. It gives direct information about the full depletion voltage and the effective doping concentration. However, for highly irradiated sensors, the…

仪器与探测器 · 物理学 2023-01-24 Sven Mägdefessel , Riccardo Mori , Niels Sorgenfrei , Ulrich Parzefall

The pressure driven Mott-transition in Chromium doped V2O3 films is investigated by direct electrical measurements on polycrystalline films with thicknesses down to 10 nm, and doping concentrations of 2%, 5% and 15%. A change in resistivity…

强关联电子 · 物理学 2024-05-15 Johannes Mohr , Tyler Hennen , Daniel Bedau , Rainer Waser , Dirk J. Wouters

Despite the remarkable progress in emerging solar cell technologies such as hybrid organic-inorganic perovskites, there are still significant limitations related to the stability of the devices and their non-ideal electrical behavior under…

Capacitance-voltage ($\textit{C-V}$) traces in n-type-(Bi$_{1-x}$Sb$_x$)$_2$Te$_3$/oxide/metal capacitor structures using an AC capacitance bridge are investigated. By tuning the top gate voltage from positive to negative values, the system…

介观与纳米尺度物理 · 物理学 2019-07-30 Jimin Wang , Markus Schitko , Gregor Mussler , Detlev Grützmacher , Dieter Weiss

Cyclic voltammetry (CV) is a powerful technique for characterizing electrochemical properties of electrochemical devices. During charging-discharging cycles, thermal effect has profound impact on its performance, but existing theoretical…

介观与纳米尺度物理 · 物理学 2023-07-04 Teng Zhao , Shuangliang Zhao , Shenggao Zhou , Zhenli Xu

This work re-defines the well-known C/V (capacitance-voltage) measurement technique, in the view of a new physics formula, discovered in 2006 by the same author.

材料科学 · 物理学 2010-11-16 Miron J Cristea

The capacitance of arrays of vertical wrapped-gate InAs nanowires are analyzed. With the help of a Poisson-Schr"odinger solver, information about the doping density can be obtained directly. Further features in the measured…

其他凝聚态物理 · 物理学 2008-09-23 O. Karlström , A. Wacker , K. Nilsson , G. Astromskas , S. Roddaro , L. Samuelson , L. -E. Wernersson

Capacitance measurements as a function of voltage, frequency and temperature are useful tools to identify fundamental parameters that affect solar cell operation. Techniques such as capacitance-voltage (CV), Mott-Schottky analysis and…

应用物理 · 物理学 2021-12-23 Sandheep Ravishankar , Zhifa Liu , Uwe Rau , Thomas Kirchartz

We have demonstrated a simple and accurate method for characterizing the capacitance of Graphene/n-Si Schottky junction solar cells (GSSCs) which embed the metal-oxide-semiconductor (MOS) capacitor. We measured two types of GSSCs, one with…

材料科学 · 物理学 2023-08-24 Masahiro Teraoka , Yuzuki Ono , Hojun Im

The effects of thickness, doping concentration and recombination of AlSb films on the performance of CdS/AlSb cells are simulated by one dimensional simulation program called analysis of microelectronic and photonic structures(AMPS1D) soft…

应用物理 · 物理学 2021-06-07 Huijin Song , Zilong Wang , Jingwen Wang , Qiang Yan , Kai Xia , Xiangfeng Deng , Minqiang Li

Voltage control of magnetism (VCM) is attracting increasing interest and exciting significant research activity driven by its profound physics and enormous potential for application. This review article aims to provide a comprehensive…

材料科学 · 物理学 2017-02-14 Cheng Song , Bin Cui , Fan Li , Xiangjun Zhou , Feng Pan

The current-voltage (I-V) characteristics of various MgB2 films have been studied at different magnetic fields parallel to c-axis. At fields \mu0H between 0 and 5T, vortex liquid-glass transitions were found in the I-V isotherms.…

超导电性 · 物理学 2008-09-08 Huan Yang , Ying Jia , Lei Shan , Yingzi Zhang , Hai-Hu Wen , Chenggang Zhuang , Zikui Liu , Qi Li , Yi Cui , Xiaoxing Xi

A large body of literature reports that both bismuth vanadate and haematite photoanodes are semiconductors with an extremely high doping density between 10^18-10^21 cm^-3. Such values are obtained from Mott-Schottky plots by assuming that…

材料科学 · 物理学 2022-03-22 Sandheep Ravishankar , Juan Bisquert , Thomas Kirchartz

The voltage-controlled magnetic anisotropy (VCMA) effect in FeB and FeB/W films was measured by four independent methods. All measurements are consistent and show the same tendency. The coercive field, Hall angle, anisotropy field, the…

材料科学 · 物理学 2018-12-19 Vadym Zayets , Takayuki Nozaki , Hidekazu Saito , Akio Fukushima , Shinji Yuasa

Mott-Schottky analysis is adapted to determine the built-in bias (Vbi) and doping density (N) of lead sulfide-zinc oxide colloidal quantum dot heterojunction solar cells. We show that charge injection barriers at the solar cell's electrodes…

材料科学 · 物理学 2011-12-08 Shawn M. Willis , Cheng Cheng , Hazel E. Assender , Andrew A. R. Watt

Scanning photocurrent microscopy (SPCM) has been widely used for characterizing charge transport properties, in particular, the minority carrier diffusion length of semiconductors. However, studying lightly doped or intrinsic semiconductors…

材料科学 · 物理学 2024-10-10 Xiujun Lian , Hanwei Gao

Transition voltage spectroscopy (TVS) has recently been introduced as a spectroscopic tool for molecular junctions where it offers the possibility to probe molecular level energies at relatively low bias voltages. In this work we perform…

介观与纳米尺度物理 · 物理学 2015-05-19 Jingzhe Chen , Troels Markussen , Kristian S. Thygesen

Mercury-Sensitized Photo-Assisted Chemical Vapor Deposition (Hg-Photo-CVD) technique opens new possibilities for reducing thin film growth temperature and producing novel semiconductor materials suitable for the future generation of high…

材料科学 · 物理学 2007-05-23 A. Barhdadi , S. Karbal , N. Mgafad , A. Benmakhlouf , M. Chafik El Idrissi , B. M. Aka

We extract the vortex lattice parameters using low-frequency two-coil mutual inductance measurements in a 20-nm-thick superconducting a-MoGe thin film. We fit the temperature dependence of ac penetration depth in the mixed state using a…

超导电性 · 物理学 2022-12-08 Soumyajit Mandal , Somak Basistha , John Jesudasan , Vivas Bagwe , Pratap Raychaudhuri
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