35 citations · 130 across the 13 of their papers we have counts for
13 papers
What enables GaOx as hole transport layer for a 16 percent 1.0 eV CuInSe2 Bottom Cells with VOC above 550 mV?
Francesco Lodola, Zhuangyi Zhou, Boaz Koren +10
Among the highly efficient photovoltaic technologies, that do not rely on epitaxy, only chalcopyrites have a bandgap tunable down to 1.00 eV, the ideal for tandem applications. Thi…
ALD Zinc Tin Oxide Buffers for Chalcopyrite Solar Cells: Electrical Barriers and Conduction Band Cliffs
Boaz Koren, Francesco Lodola, Zhuangyi Zhou +5
Sulfide chalcopyrite, Cu(In,Ga)S2, having wide bandgap (larger than 1.5 eV), favorable optoelectronic properties, and high stability, is a promising top-cell absorber for tandem ap…
Near 13% efficient semitransparent Cu(In,Ga)S2 solar cells with band gap of 1.6 eV on transparent back contact
Kulwinder Kaur, Arivazhagan Valluvar Oli, Michele Melchiorre +4
Wide-gap Cu(In,Ga)S2 solar cells with In2O3:Sn (ITO) as transparent back contact are evaluated for the application as top cells in tandem devices. The effect of Na on the solar cel…
Sodium induced beneficial effects in wide bandgap Cu(In,Ga)S2 solar cell with 15.7% efficiency
Arivazhagan Valluvar Oli, Kulwinder Kaur, Michele Melchiorre +10
This study underscores the pivotal role of sodium (Na) supply in optimizing the optoelectronic properties of wide bandgap (~1.6 eV) Cu(In,Ga)S2 (CIGS) thin film absorbers for high…
Sub-micron Cu(In,Ga)Se2 solar cell with efficiency of 18.2% enabled by a hole transport layer
Taowen Wang, Longfei Song, Saeed Bayat +6
Reducing the thickness of Cu(In,Ga)Se2 solar cells is a key objective in order to reduce production cost and to improve sustainability. The major challenge for sub-micron Cu(In,Ga)…
The effect of a band gap gradient on the radiative losses in the open circuit voltage of solar cells
Sevan Gharabeiki, Francesco Lodola, Tilly Schaaf +9
The radiative open circuit voltage loss in a solar cell occurs because the absorptance spectrum near the band gap shows gradual increase rather than sharp step function like transi…
Improved sequentially processed Cu(In,Ga)(S,Se)2 by Ag alloying
Aubin JC. M. Prot, Michele Melchiorre, Tilly Schaaf +10
Alloying small quantities of silver into Cu(In,Ga)Se2 was shown to improve the efficiency for wide and low band gap solar cells. We study low band gap industrial Cu(In,Ga)(S,Se)2 a…
Composition dependence of electronic defects in CuGaS2
Damilola Adeleye, Mohit Sood, Michele Melchiorre +2
CuGaS2 films grown by physical vapour deposition have been studied by photoluminescence (PL) spectroscopy, using excitation intensity and temperature dependent analyses. We observe…
Composition variations in Cu(In,Ga)(S,Se)2 solar cells: not a gradient, but an interlaced network of two phases
Aubin JC. M. Prot, Michele Melchiorre, Felix Dingwell +10
Record efficiency in chalcopyrite-based solar cells Cu(In,Ga)(S,Se)2 is achieved using a gallium gradient to increase the band gap of the absorber towards the back side. Although t…
Post-deposition annealing and interfacial ALD buffer layers of SbSe/CdS stacks for reduced interface recombination and increased open-circuit voltages
Thomas Paul Weiss, Ignacio Minguez-Bacho, Elena Zuccalà +8
Currently, SbSe thin films receive considerable research interest as a solar cell absorber material. When completed into a device stack, the major bottleneck for further de…
Solar cell efficiency, diode factor and interface recombination: insights from photoluminescence
T. Wang, F. Ehre, T. P. Weiss +6
Metastable defects can decisively influence the diode factor and thus the efficiency of a solar cell. The diode factor is also influenced by the doping level and the recombination…
Near surface defects: Cause of deficit between internal and external open-circuit voltage in solar cells
Mohit Sood, Aleksander Urbaniak, Christian Kameni Boumenou +6
The presence of interface recombination in a complex multilayered thin-film solar structure causes a disparity between the internal open-circuit voltage (VOC,in), measured by photo…
Passivating Surface Defects and Reducing Interface Recombination in CuInS2 Solar Cells by a Facile Solution Treatment
Mohit Sood, Alberto Lomuscio, Florian Werner +6
Interface recombination at the absorber buffer interface impedes the efficiency of a solar cell with an otherwise excellent absorber. The internal voltage or the quasi-Fermi level…