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Open research questions in Chalcogenide Semiconductor Thin Films

52 unresolved questions extracted from the limitations and future-work sections of 353 Chalcogenide Semiconductor Thin Films papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • The scalability of the sol-gel dip-coating process should be explored. The use of environmentally friendly buffer layers should be investigated. The cost-effectiveness of the Cu2CoSnS4 absorber layer should be analyzed.

    Synthesis, analysis and characterization of Cu2CoSnS4 absorber material deposited by simple and low-cost dip-coating technique for solar cells applications · 2026 · DOI

  • The efficiency of Cu2ZnSnS4 (CZTS) solar cells has remained limited. There is a need for alternative materials with improved efficiency and cost-effectiveness. The development of environmentally friendly buffer layers is necessary.

    Synthesis, analysis and characterization of Cu2CoSnS4 absorber material deposited by simple and low-cost dip-coating technique for solar cells applications · 2026 · DOI

  • High-temperature annealing introduces severe sulfur and Sb2S3 molecular escape. The lack of a suitable annealing strategy for Sb2S3 thin films. The need for a dual-action mechanism that suppresses high-temperature volatilization and guides oxygen atoms to fill sulfur vacancies.

    Ambient Confined-Space Annealing for Crystallization Enhancement and Defect Passivation in Sb2S3 Thin-Film Solar Cells · 2026 · DOI

  • The trade-off between high-temperature annealing and defect introduction has not been fully addressed. The lack of a suitable annealing strategy for Sb2S3 thin films has limited their potential for high-efficiency solar cells.

    Ambient Confined-Space Annealing for Crystallization Enhancement and Defect Passivation in Sb2S3 Thin-Film Solar Cells · 2026 · DOI

  • The limited solubility of elemental sulfur in ethylene glycol. The need to control the electrolysis conditions to obtain high-quality cathodic deposits.

    EFFECT OF DEPOSITION CONDITIONS ON THE COMPOSITION OF CdS THIN FILMS FROM A NON-AQUEOUS ETHYLENE GLYCOL ELECTROLYTE · 2026 · DOI

  • The synthesis of CdO thin films with optimal properties is a challenge. The understanding of the effect of precursor molarity on the properties of CdO thin films is limited. The optimization of nanostructure and optical properties of CdO thin films for specific applications is a challenge.

    Optimizing nanostructure and optical properties of CdO thin films via molarity-controlled SILAR deposition · 2026 · DOI

  • However, its specific role in TF PV devices and its influence on technology scalability have not yet been fully clarified.

    In-Device Assessment of the Nanometric i-ZnO Layer: A Case Study of CZTSe-Based Thin-Film Solar Cells · 2026 · DOI

  • Integrating SCAPS-1D output with techno-economic models capable of calculating LCOE as a function of absorber thickness and operating climate would bridge the gap between simulation-derived design optima and deployment-ready engineering decisions.

    Thin-film CdTe/CdS/ZnO solar cells and the path to affordable clean energy: Simulation-based evidence for sustainable photovoltaic design · 2026 · DOI

  • Recombination losses and carrier concentration limit the overall optical and electrical behavior of the CdTe layer.

    Influences of chemical and cadmium telluride thin film solar cell interfaced with titanium oxynitride bi-layer: characteristics study · 2026 · DOI

  • The influence of sulfur content on the properties of ZnIn2Se4 has not been extensively studied. The effects of sulfur doping on the optical and electrical properties of ZnIn2Se4 are not well understood.

    Influence of Sulfur on Photovoltaic Properties of n-In2S3/p-ZnIn2Se4/FTO Heterojunction Solar Cells · 2026 · DOI

  • The preparation of high-quality stoichiometric films is a crucial problem. There is a lack of understanding of the electrical properties of CdTe thin films grown by Flash Evaporation technique.

    Electrical Characterisation of CdTe Thin Films · 2026 · DOI

  • Further study of the properties of CdSe 1-x S x thin films. Investigation of the potential applications of chemical bath deposition for synthesizing substitutional cadmium sulfide-selenide solid solution films.

    SYNTHESIS OF CADMIUM SULPHIDE-SELENIDE SOLID SOLUTION FILMS. REVIEW · 2026 · DOI

  • The need for a review of the main physical and chemical methods for synthesizing substitutional cadmium sulfide-selenide solid solution films. The lack of understanding of the phase diagram of the CdS-CdSe system and the regions of existence of different phases.

    SYNTHESIS OF CADMIUM SULPHIDE-SELENIDE SOLID SOLUTION FILMS. REVIEW · 2026 · DOI

  • The development of new semiconductor materials with improved efficiency and stability. The investigation of selenium-based semiconductor systems and thin-film photovoltaic technologies. The study of the challenges and limitations of advanced semiconductor materials for renewable energy technologies.

    Advanced Semiconductor Materials for Renewable Energy Technologies · 2026 · DOI

  • The need for sustainable and renewable energy technologies. The limitations of current semiconductor materials for renewable energy applications. The potential of advanced semiconductor materials to improve the efficiency and stability of renewable energy devices.

    Advanced Semiconductor Materials for Renewable Energy Technologies · 2026 · DOI

  • The solubility limit of aluminum in the CdTe lattice is close to x = 0.08. The formation of pseudo-alloys between CdTe and aluminum is limited by the co-sputtering process.

    (CdTe)<sub>1-x</sub>Al<sub>x</sub> films produced by RF co-sputtering employing CdTe and aluminum targets · 2026 · DOI

  • To investigate the properties of the (CdTe)1-xAlx system further. To explore the potential applications of the (CdTe)1-xAlx films in solar cells. To optimize the deposition conditions to achieve higher efficiency.

    (CdTe)<sub>1-x</sub>Al<sub>x</sub> films produced by RF co-sputtering employing CdTe and aluminum targets · 2026 · DOI

  • The study aims to fill the gap in understanding the influence of various factors on the composition of CdS thin films. The paper investigates the co-deposition of cadmium with elemental sulfur, which is a relatively unexplored area.

    EFFECT OF DEPOSITION CONDITIONS ON THE COMPOSITION OF CdS THIN FILMS FROM A NON-AQUEOUS ETHYLENE GLYCOL ELECTROLYTE · 2026 · DOI

  • The need for optimization of CdTe-based solar cells. The lack of a viable method for creating high-performance CdTe solar cells.

    Predictive Modelling and Optimization of CdTeBased Solar Cells Using SCAPS-1D and ML Models · 2026 · DOI

  • Future research should investigate the effect of different solvent mixtures on the performance of the devices. Future research should focus on improving the film quality of the solution-processed active layer to increase charge collection efficiency and fill factors.

    Investigation of charge recombination losses and charge collection efficiency in DPP-DTT:PC70BM based BHJ solar cell from impedance spectroscopy · 2026 · DOI

  • The study identifies a gap in the understanding of charge recombination losses and charge collection efficiency in DPP-DTT:PC70BM based BHJ solar cells. The study highlights the need for further research into the role of charge carrier dynamics on the performance of BHJ solar cells.

    Investigation of charge recombination losses and charge collection efficiency in DPP-DTT:PC70BM based BHJ solar cell from impedance spectroscopy · 2026 · DOI

  • Future research should focus on addressing the limitations of numerical modeling and simulation, such as the polycrystalline nature of CIGS and non-uniform defect distributions. Future research should explore the development of more efficient CIGS solar cells using advanced architectures, such as double-absorber layers and perovskite/CIGS tandems. Future research should investigate the practical implications of the study's findings and develop more efficient CIGS solar cells for practical applications.

    Performance Enhancement of CIGS Thin-Film Solar Cells through Numerical Modeling · 2026 · DOI

  • There is a significant gap between theoretical predictions and practical devices in terms of efficiency. The study aims to address this gap by identifying pathways to improve the efficiency of CIGS solar cells. The study seeks to contribute to the understanding of CIGS solar cells and inform the development of more efficient CIGS solar cells.

    Performance Enhancement of CIGS Thin-Film Solar Cells through Numerical Modeling · 2026 · DOI

  • Future studies can investigate the effect of other synthesis parameters on the properties of CdO thin films. The development of CdO-based devices with enhanced properties can be explored. The application of CdO thin films in various fields such as solar energy harvesting, optoelectronic integration, and photovoltaics can be investigated.

    Optimizing nanostructure and optical properties of CdO thin films via molarity-controlled SILAR deposition · 2026 · DOI

  • The investigation of the stability of the proposed perovskite solar cell architecture. The development of new sulfur precursors for the synthesis of high-quality CdS thin films. The investigation of the energy band alignment between CdS and other perovskite materials.

    Thiourea-based CdS thin films: structural and optical analysis for photovoltaic applications · 2026 · DOI

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52 open questions have been extracted from the limitations and future-work passages of 353 Chalcogenide Semiconductor Thin Films papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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