Browsing by Author "Guc, Maxim"
Now showing items 1-16 of 16
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2-step process for 5.4% CuGaSe2 solar cell using fluorine doped tin oxide transparent back contacts
(2023)
Article
Open AccessAs single-junction solar cells are approaching theoretical limits, multijunction solar cells are becoming increasingly relevant, and low-cost wider bandgap light harvesters in tandem with silicon are the next frontier in ... -
Challenges and improvement pathways to develop quasi-1D (Sb1-xBix)2Se3-based materials for optically tuneable photovoltaic applications. Towards chalcogenide narrow-bandgap devices
(2023-03-01)
Article
Open AccessQuasi-1D chalcogenides have shown great promises in the development of emerging photovoltaic technologies. However, most quasi-1D semiconductors other than Sb2Se3 and Sb2S3 have been seldom investigated for energy generation ... -
Characterization of the stability of indium tin oxide and functional layers for semitransparent back-contact applications on Cu(in,Ga)Se2 solar cells
(Wiley, 2022-07-08)
Article
Open AccessHerein, a detailed study of the stability of different ITO-based back-contact configurations (including bare ITO contacts and contacts functionalized with nanometric Mo, MoSe2, and MoS2 layers) under the coevaporation ... -
Combinatorial and machine learning approaches for the analysis of Cu2ZnGeSe4: influence of the off-stoichiometry on defect formation and solar cell performance
(Royal Society of Chemistry (RSC), 2021-04-28)
Article
Open AccessSolar cells based on quaternary kesterite compounds like Cu2ZnGeSe4 are complex systems where the variation of one parameter can result in changes in the whole system, and, as consequence, in the global performance of the ... -
Controlling the anionic ratio and gradient in kesterite technology
(2022-01-03)
Article
Open AccessAccurate anionic control during the formation of chalcogenide solid solutions is fundamental for tuning the physicochemical properties of this class of materials. Compositional grading is the key aspect of band gap engineering ... -
High efficiency Cu2ZnSnS4 solar cells over FTO substrates and their CZTS/CdS interface passivation via thermal evaporation of Al2O3
(Royal Society of Chemistry (RSC), 2021-04-28)
Article
Open AccessThe fabrication of soda lime glass/fluorine-doped tin oxide (SLG/FTO) transparent substrates represents an important advance in the fabrication of tandem solar cells. In addition, possible passivation using Al2O3, which ... -
Insights into interface and bulk defects in a high efficiency kesterite-based device
(2021-01-01)
Article
Open AccessThis work provides a detailed analysis of a high efficiency Cu2ZnSnSe4 device using a combination of advanced electron microscopy and spectroscopy techniques. In particular, a full picture of the different defects present ... -
Insights on the limiting factors of Cu2ZnGeSe4 based solar cells
(2021-08-01)
Article
Restricted access - publisher's policyGermanium-based wide band gap kesterite semiconductor Cu2ZnGe(S,Se)4 (CZGeSSe) is considered a very promising absorber compound as top cell in tandem devices. Autonomy to tailor the band gap from ~1.47 eV (Cu2ZnGeSe4-CZGeSe) ... -
Insights on the thermal stability of the Sb2Se3 quasi-1D photovoltaic technology
(Wiley, 2021-10-13)
Article
Open AccessThis work explores the thermal stability of antimony-based photovoltaic (PV) technologies investigating the effect of low-temperature (50—350¿°C) postdeposition annealings (PDAs) on bare Sb2Se3 absorbers and complete ... -
Investigation on limiting factors affecting Cu2ZnGeSe4 efficiency: Effect of annealing conditions and surface treatment
(2020-10-01)
Article
Open AccessThis work aims to unveil the optimal annealing conditions and surface treatments of CZGeSe absorbers, synthesized using vacuum-based deposition technique, with an eye to optimizing the main parameters allowing better control ... -
Polarized Raman scattering study of kesterite type Cu2 ZnSnS4 single crystals
(Nature Publishing Group, 2016-01-18)
Article
Open AccessA non-destructive Raman spectroscopy has been widely used as a complimentary method to X-ray diffraction characterization of Cu2 ZnSnS4 (CZTS) thin films, yet our knowledge of the Raman active fundamental modes in this ... -
Raman scattering quantitative assessment of the anion composition ratio in Zn(O,S) layers for Cd-free chalcogenide-based solar cells
(Royal Society of Chemistry, 2016)
Open AccessThis work reports the use of Raman scattering for the chemical characterization of Zn(O,S) layers that are being developed as a Cd-free alternative for the buffer layer in advanced chalcogenide solar cells. The nanometric ... -
Stability of Cu2ZnSnSe4/CdS heterojunction based solar cells under soft post-deposition thermal treatments
(2023-01-01)
Article
Restricted access - publisher's policyThe thermal stability of the Cu2ZnSnSe4 (CZTSe) absorber and CdS buffer layers in SLG/Mo/CZTSe/CdS/i-ZnO/ITO devices is explored by performing a series of soft (~200 °C) post deposition treatments (PDTs). A comprehensive ... -
The effect of annealing temperature on Cu2ZnGeSe4 thin films and solar cells grown on transparent substrates
(2021-07-01)
Article
Open AccessSemi-transparent solar cells are the next step for photovoltaics into our daily life. Over the last years, kesterite-type material has attracted a special attention to be used as an absorber in thin-film solar cells because ... -
Towards low cost and sustainable thin film thermoelectric devices based on quaternary chalcogenides
(2022-05-20)
Article
Open AccessA major challenge in thermoelectrics (TEs) is developing devices made of sustainable, abundant, and non-toxic materials. Furthermore, the technological drive toward low sizes makes crucial the study of nano and micro ... -
Transition metal oxides for kesterite solar cells developed on transparent substrates
(2020-07-01)
Article
Open AccessFabrication on transparent soda-lime glass/fluorine-doped tin oxide (FTO) substrates opens the way to advanced applications for kesterite solar cells such as semitransparent, bifacial, and tandem devices, which are key to ...
