9.1% efficient zinc oxide/silicon solar cells on a 50 μm thick Si absorber

• Rafal Pietruszka,
• Bartlomiej S. Witkowski,
• Monika Ozga,
• Katarzyna Gwozdz,
• Ewa Placzek-Popko and
• Marek Godlewski

Beilstein J. Nanotechnol. 2021, 12, 766–774, doi:10.3762/bjnano.12.60

• the light-trapping effect. The impact of light-trapping on the operation of solar cells is presented by means of current–voltage curves. In contrast, sample B showed a flat surface morphology. The average RMS roughness value was 9 nm. Therefore, interference peaks in external quantum efficiency (EQE

A biomimetic nanofluidic diode based on surface-modified polymeric carbon nitride nanotubes

• Kai Xiao,
• Baris Kumru,
• Lu Chen,
• Lei Jiang,
• Bernhard V. K. J. Schmidt and
• Markus Antonietti

Beilstein J. Nanotechnol. 2019, 10, 1316–1323, doi:10.3762/bjnano.10.130

• CNNM after unilateral AHPA group modification. (c) FTIR spectra before and after the unilateral modification with AHPA and AA groups. (a) Current–voltage curves before and after unilateral modification with AHPA. (b) Current–voltage curves before and after unilateral modification with AA. Supporting

Near-infrared light harvesting of upconverting NaYF₄:Yb³⁺/Er³⁺-based amorphous silicon solar cells investigated by an optical filter

• Daiming Liu,
• Qingkang Wang and
• Qing Wang

Beilstein J. Nanotechnol. 2018, 9, 2788–2793, doi:10.3762/bjnano.9.260

• measurements was 60 mW. Optical spectra were recorded using a UV–vis–NIR spectrophotometer (Lambda 750S, PerkinElmer) with an integrating sphere (60 mm) attachment. Current–voltage curves were measured by using a solar simulator under standard test conditions (AM1.5, 100 mW/cm2 and 25 °C). EQE curves were

• cell without reflector in 370–1100 nm; (e) transmittance spectrum of the optical filter and the inset optical photograph. (a) Current–voltage curves and (b) EQE curves of an a-Si:H solar cell with an UC layer compared with the bare cell under AM1.5 solar irradiation through the optical filter. Inset in

Lead-free hybrid perovskites for photovoltaics

• Oleksandr Stroyuk

Beilstein J. Nanotechnol. 2018, 9, 2209–2235, doi:10.3762/bjnano.9.207

Spin-coated planar Sb₂S₃ hybrid solar cells approaching 5% efficiency

• Pascal Kaienburg,
• Benjamin Klingebiel and
• Thomas Kirchartz

Beilstein J. Nanotechnol. 2018, 9, 2114–2124, doi:10.3762/bjnano.9.200

• atmosphere by mounting the samples (while still inside a glovebox) in a closed holder with glass window. Current–voltage curves were performed with an AM1.5 spectrum on a grade AAA Solar Simulator. No masks were used for solar simulator measurements since the Jsc values were obtained from EQE measurements

Spin-dependent transport and functional design in organic ferromagnetic devices

• Guichao Hu,
• Shijie Xie,
• Chuankui Wang and
• Carsten Timm

Beilstein J. Nanotechnol. 2017, 8, 1919–1931, doi:10.3762/bjnano.8.192

• their current–voltage curves. A larger current is obtained for positive bias, where the rectification ratio, defined as RR(V) = −Ic(V)/Ic(−V) for CC and SRR(V) = −Ic(V)/Ic(−V) for SC, reaches about 22 at 0.8 V for both CC and SC. The rectification of SC is of the type of parallel rectification, where

Obtaining and doping of InAs-QD/GaAs(001) nanostructures by ion beam sputtering

• Sergei N. Chebotarev,
• Alexander S. Pashchenko,
• Leonid S. Lunin,
• Elena N. Zhivotova,
• Georgy A. Erimeev and
• Marina L. Lunina

Beilstein J. Nanotechnol. 2017, 8, 12–20, doi:10.3762/bjnano.8.2

• is important to note that we doped not the quantum dots but the gallium arsenide spacer layers. Dark I–V measurements were carried out at a temperature of 90 K. The obtained results were shown in Figure 9. Two regions can be distinguished in the current–voltage curves. The first region is from 0.0 to

Layered composites of PEDOT/PSS/nanoparticles and PEDOT/PSS/phthalocyanines as electron mediators for sensors and biosensors

• Celia García-Hernández,
• Cristina García-Cabezón,
• Fernando Martín-Pedrosa,
• José Antonio De Saja and
• María Luz Rodríguez-Méndez

Beilstein J. Nanotechnol. 2016, 7, 1948–1959, doi:10.3762/bjnano.7.186

• and resistivity were measured with the four-point probe test (Table 1). The current–voltage curves obtained from PEDOT/PSS and PEDOT/PSS/EM electrodes exhibited a good linear fit with correlation coefficients higher than 0.999. It has been reported that the addition of different dopants to an aqueous

Sb₂S₃ grown by ultrasonic spray pyrolysis and its application in a hybrid solar cell

• Erki Kärber,
• Atanas Katerski,
• Ilona Oja Acik,
• Arvo Mere,
• Valdek Mikli and
• Malle Krunks

Beilstein J. Nanotechnol. 2016, 7, 1662–1673, doi:10.3762/bjnano.7.158

• . Supporting Information Additional SEM images, optical transmittance spectra, and current–voltage curves. Supporting Information File 200: Additional experimental data. Acknowledgements The work is financially supported by Estonian Ministry of Education and Research (IUT19-4), Estonian Science Foundation

NO gas sensing at room temperature using single titanium oxide nanodot sensors created by atomic force microscopy nanolithography

• Li-Yang Hong and
• Heh-Nan Lin

Beilstein J. Nanotechnol. 2016, 7, 1044–1051, doi:10.3762/bjnano.7.97

• reported in the literature. Note that the listed responses are based on our present definition S = ΔR/R0 and some are different from the original values in the references. Supporting Information Supporting Information features the current–voltage curves of sensors A and B before NO sensing, the

Invariance of molecular charge transport upon changes of extended molecule size and several related issues

• Ioan Bâldea

Beilstein J. Nanotechnol. 2016, 7, 418–431, doi:10.3762/bjnano.7.37

• spurious structures in nonlinear ranges of current–voltage curves. Keywords: extended Hückel method; Landauer formalism; molecular electronics; negative differential resistance; wide- and flat-band approximation; Introduction Even restricted to the steady-state regime, studying charge transport through

Synthesis and applications of carbon nanomaterials for energy generation and storage

• Marco Notarianni,
• Jinzhang Liu,
• Kristy Vernon and
• Nunzio Motta

Beilstein J. Nanotechnol. 2016, 7, 149–196, doi:10.3762/bjnano.7.17

Conductance through single biphenyl molecules: symmetric and asymmetric coupling to electrodes

• Karthiga Kanthasamy and
• Herbert Pfnür

Beilstein J. Nanotechnol. 2015, 6, 1690–1697, doi:10.3762/bjnano.6.171

• substrates, and the XPS signal (XPS = X-ray photoelectron spectroscopy) was measured in a UHV chamber after adsorption of molecules in the solvent for 24 h. The current–voltage curves were measured with a Keithley 2401 sourcemeter, controlled by a LAB view program. We carried out two types of measurements

Observation of a photoinduced, resonant tunneling effect in a carbon nanotube–silicon heterojunction

• Carla Aramo,
• Antonio Ambrosio,
• Michelangelo Ambrosio,
• Maurizio Boscardin,
• Paola Castrucci,
• Michele Crivellari,
• Marco Cilmo,
• Maurizio De Crescenzi,
• Francesco De Nicola,
• Emanuele Fiandrini,
• Valentina Grossi,
• Pasqualino Maddalena,
• Maurizio Passacantando,
• Sandro Santucci,
• Manuela Scarselli and
• Antonio Valentini

Beilstein J. Nanotechnol. 2015, 6, 704–710, doi:10.3762/bjnano.6.71

• low, intrinsic dark current and noise. Keywords: heterojunction; multiwall carbon nanotubes; NDR; photodetector; tunneling; Introduction Negative differential resistance (NDR), where the current decreases as a function of voltage, has been observed in the current–voltage curves of several types of

Chains of carbon atoms: A vision or a new nanomaterial?

• Florian Banhart

Beilstein J. Nanotechnol. 2015, 6, 559–569, doi:10.3762/bjnano.6.58

• most chains, an S-type behaviour (Figure 4). This is characteristic of the existence of a bandgap. In view of the preferred configuration of polyyne and possible strain, the current–voltage curves are qualitatively understandable. A conductance measurement on a related system has been carried out by

• magnitude lower than expected [32], but in this preliminary study the occurrence of the chains was just assumed. Later experiments, where the chains were clearly visible [23][43], showed still lower conductivities. Current–voltage curves are rather simple two-terminal measurements that give access to the

Influence of diffusion on space-charge-limited current measurements in organic semiconductors

• Thomas Kirchartz

Beilstein J. Nanotechnol. 2013, 4, 180–188, doi:10.3762/bjnano.4.18

• Thomas Kirchartz Department of Physics and Centre for Plastic Electronics, Imperial College London, South Kensington Campus SW7 2AZ, United Kingdom 10.3762/bjnano.4.18 Abstract Numerical simulations of current–voltage curves in electron-only devices are used to discuss the influence of charged

• reasonably accurate mobility values. Keywords: current–voltage curves; electron-only device; drift–diffusion; mobility; simulation; traps; Introduction A frequently used method to analyze charge carrier transport in organic semiconductors is based on space-charge-limited current measurements performed on

• be neglected anymore, which makes analytical approximations for this situation problematic [7][10][13]. In this article numerical simulations are used to show how the presence of traps leads to deviations from the analytical equations typically used to analyze single-carrier current–voltage curves. I

Structural, electronic and photovoltaic characterization of multiwalled carbon nanotubes grown directly on stainless steel

• Luca Camilli,
• Manuela Scarselli,
• Silvano Del Gobbo,
• Paola Castrucci,
• Eric Gautron and
• Maurizio De Crescenzi

Beilstein J. Nanotechnol. 2012, 3, 360–367, doi:10.3762/bjnano.3.42

• compare the current–voltage curves collected. As reported in Figure 10a and Figure 10b, the open-circuit voltage (Voc) and the short-circuit density current (Jsc) in the in-plane configuration are markedly lower than those collected in the top-down geometry. The lower value of Jsc can be justified by the

An MCBJ case study: The influence of π-conjugation on the single-molecule conductance at a solid/liquid interface

• Wenjing Hong,
• Hennie Valkenier,
• Gábor Mészáros,
• David Zsolt Manrique,
• Artem Mishchenko,
• Alexander Putz,
• Pavel Moreno García,
• Colin J. Lambert,
• Jan C. Hummelen and
• Thomas Wandlowski

Beilstein J. Nanotechnol. 2011, 2, 699–713, doi:10.3762/bjnano.2.76

• . (A–C) Individual current–voltage curves of (A) a gold–gold contact, (B) a gold|AC|gold molecular junction, and (C) tunneling response through the solvent upon approaching the noise level. (D) Traces constructed from the slopes of individual I–V curves as recorded simultaneously during a slow