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Advanced Technologies of Solar Cells: 2nd Edition

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A2: Solar Energy and Photovoltaic Systems".

Deadline for manuscript submissions: closed (26 March 2026) | Viewed by 3018

Special Issue Editors


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Guest Editor
LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, 4200-465 Porto, Portugal
Interests: perovskite solar cells; up-scaling techniques; characterization of photoelectrochemical devices; electrochemical reactors; chromatographic analysis; organic synthesis
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
1. LEPABE—Laboratory for Process Engineering, Environment, Biotechnology and Energy, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
2. ALiCE—Associate Laboratory in Chemical Engineering, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
Interests: perovskite solar cells; dye-sensitized solar cells; photoelectrochemistry; characterization of photoelectrochemical devices; phenomenological modeling of photoelectrochemical devices; electrochemical impedance spectroscopy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Guest Editors are inviting submissions to a Special Issue of Energies on the subject area “Advanced Technologies of Solar Cells”. Solar cells are devices that use the photovoltaic effect to convert energy of sunlight directly into electricity. The actual energetic crisis has reinforced that transition of the energy system from fossil to renewable energy sources. Among the renewable technologies, solar energy takes the advantage of being everlasting, safe, and noise/pollution-free. Silicon solar panels are the most common solar technology, occupying more than 90% of the global photovoltaic market, however the efficiency is significantly under the theoretical limit of 30%. Alternative low-cost and high-efficiency materials are emerging with global efficiencies surpassing the 25% for perovskite solar cells and 30% for the perovskite/silicon tandem devices.

This Special Issue aims to provide an overview of the recent technology advancements in the fabrication of solar cells. Relevant experimental and theoretical papers related to the above-mentioned topic are welcome, including, but not limited to, perovskite solar cells, dye-sensitized solar cells, organic/inorganic cells, Si, CdTe, CIGS, and tandem devices. Papers submitted to this Special Issue will be subject to a meticulous peer-review process with the goal of fast and effective dissemination of research results, developments, and applications.

Dr. Luísa Andrade
Dr. Vera C. M. Duarte
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Energies is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • emergent solar cells
  • tandem devices
  • materials
  • modelling
  • design
  • upscaling
  • prototyping

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Related Special Issue

Published Papers (2 papers)

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Research

24 pages, 3582 KB  
Article
High-Efficiency Thick-Film Organic Cells for Indoor Photovoltaics Printed in Air from Non-Halogenated Solvents
by Pavlo Perkhun, Anass Khodr, Yatzil Alejandra Avalos Quiroz, Aral Karahan, Hasan Alkhatib, Anil Kumar Bharwal, David Duché, Jean-Jacques Simon, Carmen M. Ruiz Herrero, Takeshi Watanabe, Hidehiro Sekimoto, Noriyuki Yoshimoto, Olivier Margeat, Christine Videlot-Ackermann and Jörg Ackermann
Energies 2026, 19(7), 1773; https://doi.org/10.3390/en19071773 - 3 Apr 2026
Viewed by 597
Abstract
Thick-film organic photovoltaics (OPVs) are key for scalable manufacturing, but increasing active-layer thickness usually lowers power conversion efficiency (PCE) due to charge recombination and limited carrier extraction. We report high-efficiency thick-film OPVs fully processed in air by doctor blading using non-halogenated solvents ( [...] Read more.
Thick-film organic photovoltaics (OPVs) are key for scalable manufacturing, but increasing active-layer thickness usually lowers power conversion efficiency (PCE) due to charge recombination and limited carrier extraction. We report high-efficiency thick-film OPVs fully processed in air by doctor blading using non-halogenated solvents (o-xylene with 3.5% tetralin) for two non-fullerene acceptor systems: PM6:ITIC-4F and PTQ-10:ITIC-4F. Active layers (100–500 nm) were fabricated by adjusting the coating speed while keeping the ink concentration and gap constant. Under mild drying (40 °C, 2 min), both systems exhibited significant efficiency losses at 1 sun (AM1.5G) as the thickness increased, whereas performance was largely preserved under indoor LED illumination (200 lx and 1000 lx), enabling high performance for thick films. Short thermal post-annealing (80–140 °C, 2 min) further improved PCE by reducing bimolecular recombination and enhancing nanostructure. Optimized PM6:ITIC-4F devices reached 10.2% (300 nm) under 1 sun and 14.78% at 200 lx; PTQ-10:ITIC-4F achieved 11.3% (500 nm) under 1 sun and up to 15.71% at 200 lx. Morphological and structural analysis indicates that the superior thick-film performance of PTQ-10:ITIC-4F is linked to favorable phase behavior, polymer-rich surface composition, and preferential face-on molecular orientation, promoting charge collection. These results demonstrate that low-cost PTQ-10 and non-halogenated air processing can enable industrially relevant, high-performance thick-film OPVs. Full article
(This article belongs to the Special Issue Advanced Technologies of Solar Cells: 2nd Edition)
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11 pages, 8235 KB  
Article
Performance Improvement of Vertical Channel Indium–Gallium–Zinc Oxide Thin-Film Transistors Using Porous MXene Electrode
by Wanqiang Fu, Qizhen Chen, Peng Gao, Linqin Jiang, Yu Qiu, Dong-Sing Wuu, Ray-Hua Horng and Shui-Yang Lien
Energies 2025, 18(9), 2331; https://doi.org/10.3390/en18092331 - 2 May 2025
Viewed by 1416
Abstract
The surface morphology of porous source electrodes plays a significant role in the performance of vertical channel indium–gallium–zinc oxide thin-film transistors (VC-IGZO-TFTs). This study systematically investigates the properties of porous MXene-based source electrodes and their impact on VC-IGZO-TFTs fabricated with varying MXene concentrations. [...] Read more.
The surface morphology of porous source electrodes plays a significant role in the performance of vertical channel indium–gallium–zinc oxide thin-film transistors (VC-IGZO-TFTs). This study systematically investigates the properties of porous MXene-based source electrodes and their impact on VC-IGZO-TFTs fabricated with varying MXene concentrations. As the MXene concentration increases, both the sheet resistance and porosity of the electrodes decrease. VC-IGZO-TFTs based on a 3.0 mg/mL MXene concentration exhibit optimal electrical performance, with a threshold voltage (Vth) of 0.16 V, a subthreshold swing (SS) of 0.20 V/decade, and an on/off current ratio (Ion/Ioff) of 4.90 × 105. Meanwhile, the VC-IGZO-TFTs exhibit excellent electrical reliability and mechanical stability. This work provides a way to analyze the influence of sheet resistance and porosity on the performance of VC-IGZO-TFTs, offering a viable approach for enhancing device efficiency through porous MXene electrode engineering. Full article
(This article belongs to the Special Issue Advanced Technologies of Solar Cells: 2nd Edition)
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