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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,…

Applied Physics · Physics 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…

Instrumentation and Detectors · Physics 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…

Strongly Correlated Electrons · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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.

Materials Science · Physics 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…

Other Condensed Matter · Physics 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…

Applied Physics · Physics 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…

Materials Science · Physics 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…

Applied Physics · Physics 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…

Materials Science · Physics 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.…

Superconductivity · Physics 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…

Materials Science · Physics 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…

Materials Science · Physics 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…

Materials Science · Physics 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…

Materials Science · Physics 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…

Mesoscale and Nanoscale Physics · Physics 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…

Materials Science · Physics 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…

Superconductivity · Physics 2022-12-08 Soumyajit Mandal , Somak Basistha , John Jesudasan , Vivas Bagwe , Pratap Raychaudhuri
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