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Open research questions in Advanced Thermoelectric Materials and Devices

174 gap statements mined from Advanced Thermoelectric Materials and Devices papers in our 7.9M-paper local library, which holds 2,877 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • In addition, the type of thermal interface material placed between the TEG and both the thermal source and the heatsink also plays a critical role in the thermal management; however, this has not been evaluated in the literature.

    Principle and Applications of Thermoelectric Generators: A Review · 2025 · DOI

  • The mode-resolved contributions are shown using the same color scheme as in panels (a)-(b), and they are limited to the five lowest modes.

    Glass-like anomalies and unconventional thermoelectric transport in chimney ladder crystals · 2026 · DOI

  • However, the performance of such devices under complex mechanical conditions, particularly under biaxial tensile strain, remains underexplored.

    Experimental and simulated studies on thin-film thermoelectric generator insensitive to tensile strain · 2026 · DOI

  • Copper-based chalcopyrite semiconductors have attracted sustained interest owing to their promising thermoelectric (TE) performance, yet the microscopic origins of their TE behavior remain incompletely understood.

    Thermoelectric properties of the copper-based chalcopyrite semiconductors Cu M X 2 ( M = Al, Ga, and In; X = S, Se, and Te) from first-principles calculations · 2026 · DOI

  • Solar thermoelectric generators (STEGs) provide a promising route for sustainable solar energy harvesting, yet molecular regulation of excited‐state energy dissipation in biomass‐derived photothermal materials remains underexplored.

    Ligand‐Engineered Cu 2+ Coordination Environments in Biomass‐Derived Photothermal Networks for Efficient Solar Thermoelectric Conversion · 2026 · DOI

  • The underlying physics for the thermoelectric disparity between Cu- and Ag-based materials remains unclear.

    Unveiling disparities and promises of Cu and Ag chalcopyrites for thermoelectrics · 2024 · DOI

  • Further studies can investigate the effects of different strains and phases on thermoelectric efficiency. The development of new thermoelectric materials can be informed by this study.

    Electronic properties and thermoelectric performance of 2D ZnSe and its haeckelite phases by first-principles approach and Boltzmann transport theory · 2026 · DOI

  • There is a need to optimize thermoelectric efficiency in 2D ZnSe and Haeckelite materials. The effects of strain and phase engineering on thermoelectric efficiency are not well understood.

    Electronic properties and thermoelectric performance of 2D ZnSe and its haeckelite phases by first-principles approach and Boltzmann transport theory · 2026 · DOI

  • Improving electrical transport and suppressing the thermal conduction is a significant challenge. The development of high performance ionic-bonded thermoelectrics is a complex task. The paper identifies the need to optimize the parameters that determine the thermoelectric conversion efficiency.

    Chemical bonding manipulation unlocks high performance ionic-bonded thermoelectrics · 2026 · DOI

  • Further studies can be conducted to investigate the effect of other doping elements on the thermoelectric properties of Mg₃Bi₂. Experimental verification of the theoretical results is necessary. The study of other thermoelectric materials with similar properties to Mg₃Bi₂ can be conducted.

    Electronic, mechanical, and thermoelectric properties of Mg3Bi2-based materials by rare earth elements doping · 2026 · DOI

  • The intrinsic narrow bandgap and relatively low Seebeck coefficient of Mg₃Bi₂ limit its thermoelectric performance. There is a need to improve the thermoelectric properties of Mg₃Bi₂-based materials.

    Electronic, mechanical, and thermoelectric properties of Mg3Bi2-based materials by rare earth elements doping · 2026 · DOI

  • The underlying causes of this variation are not well understood. There is a need to decouple compositional effects from processing-induced artefacts.

    Supplementary Materials for Hidden processing drivers of thermoelectric performance in tetrahedrites · 2026 · DOI

  • The paper suggests that the model can be used for further research and design of thermoelectric energy sources. The paper suggests that the model can be used for the optimization of the device structure. The paper suggests that the model can be used for the evaluation of energy efficiency.

    Mathematical model of a thermoelectric converter based on the peltier effect · 2026 · DOI

  • The paper identifies the need for a comprehensive model of a Peltier element. The paper identifies the need for a model that can describe the thermodynamic, thermoelectric, and electrical processes occurring during its operation.

    Mathematical model of a thermoelectric converter based on the peltier effect · 2026 · DOI

  • It highlights the need for new material platforms that combine infrared concealment with multimodal functionality. The study also notes the limitations of current materials, such as limited mechanical flexibility and poor processability.

    Flexible infrared camouflage eutectic gallium-indium for thermoelectric energy harvesting · 2026 · DOI

  • The low conductivity of PEDOT:PSS limits its applications. Existing post-treatment doping methods involve harmful organic solvents or reagents.

    A Novel and Green Method for Preparing Highly Conductive PEDOT:PSS Films for Thermoelectric Energy Harvesting · 2024 · DOI

  • The overall aim is to improve electrical transport and suppress the thermal conduction, but prior approaches have not fully achieved this goal.

    Chemical bonding manipulation unlocks high performance ionic-bonded thermoelectrics · 2026 · DOI

  • This review has systematically surveyed the recent advances in inorganic, organic, and hybrid thermoelectric fibers, with an emphasis on materials design, fabrication strategies, and system-level integration.

    Progress in Fiber Thermoelectric Materials for Next-Generation Wearable Applications · 2026 · DOI

  • There are no detailed reports available on the Bi2.5Se2.5 composition in the thermoelectric literature. Defect-engineered bulk chalcogenide thermoelectric systems featuring simultaneous cationic and anionic substitution have received very little attention.

    Synergistic effects of Ge and Te doping on structural, electrical, and thermoelectric properties of Bi2.5Se2.5 · 2026 · DOI

  • Fabrication processes to obtain three-dimensional structures often require additional jigs or actuators. These processes still have room for improvement in terms of simplicity and scalability.

    High power density in a fully printed origami-inspired rolled thermoelectric generator enabled by paper self-folding · 2026 · DOI

  • The core future challenge lies in fundamentally decoupling the strong interdependencies among σ, S, and κ.

    Engineering Process of Polymer for Thermoelectric Applications · 2026 · DOI

  • Further optimization of Bi–Sb–Te system via selective doping strategy. Investigation of other transition metal doping effects on thermoelectric properties. Exploration of the potential applications of the optimized Bi–Sb–Te system.

    Defect-mediated n-type to p-type transition and enhanced thermoelectric performance in Bi1.8−xNixSb0.2Te3 alloys · 2026 · DOI

  • Exploring the use of the proposed Rolled TEG as a paper-based environmental sensor, - Developing battery-less sensors that obtain signals using only ambient energy…

    High power density in a fully printed origami-inspired rolled thermoelectric generator enabled by paper self-folding · 2026 · DOI

  • Exploring the use of EGaIn in fields such as respiratory monitoring and Morse code transmission, - Investigating the scalability of P-EGaIn production for complex scenarios, - Developing new material platforms that combine infrared concealment with multimodal…

    Flexible infrared camouflage eutectic gallium-indium for thermoelectric energy harvesting · 2026 · DOI

  • Further research on optimizing the carrier concentration across the entire operating temperature range. Investigation of other doping strategies to improve the thermoelectric performance of n-type PbTe.

    Temperature-Adaptive Carrier Regulation and Enhanced Thermoelectric Performance in n-Type PbTe via Deep-Shallow Co-Doping · 2026 · DOI

Most-cited papers in Advanced Thermoelectric Materials and Devices

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This page shows what the Advanced Thermoelectric Materials and Devices literature already flags as unresolved. To narrow it to your specific question, search the Research Gap Finder: the search is free with a free account and lists the papers closest to your topic first. Unlocking that topic (50 credits, charged once) fills the comparison table from our 7.9M-paper local library and writes the gaps from its rows.

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Open questions raised by papers listed on this page include: (1) The performance of such devices under complex mechanical conditions, particularly under biaxial tensile strain, remains underexplored (“Experimental and simulated studies on thin-film thermoelectric generator…”, 2026); (2) Copper-based chalcopyrite semiconductors have attracted sustained interest owing to their promising thermoelectric (TE) performance, yet the microscopic origins of their TE behavior remain incompletely understood (“Thermoelectric properties of the copper-based chalcopyrite semiconductors Cu M…”, 2026); (3) Solar thermoelectric generators (STEGs) provide a promising route for sustainable solar energy harvesting, yet molecular regulation of excited‐state energy dissipation in biomass‐derived photothermal materials remains underexplored (“Ligand‐Engineered Cu 2+ Coordination Environments in Biomass‐Derived…”, 2026); (4) There is a need to optimize thermoelectric efficiency in 2D ZnSe and Haeckelite materials (“Electronic properties and thermoelectric performance of 2D ZnSe and its…”, 2026); (5) There is a need to improve the thermoelectric properties of Mg₃Bi₂-based materials (“Electronic, mechanical, and thermoelectric properties of Mg3Bi2-based materials…”, 2026). 174 gap statements have been mined from Advanced Thermoelectric Materials and Devices papers in our 7.9M-paper local library, which holds 2,877 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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