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Find the latest reports and scientific outputs from the HORATES network, as well as resources that will be built up in the course of the project.


Our yearly newsletter informs about the acitivites in HORATES.

Materials library

Organic and hybrid thermoelectric (TE) materials can be designed using a large variety of constituents and processing conditions and further characterized regarding their TE performances using different experimental methods. One of the goals of HORATES is to build a free-acces library of thermoelectric materials, based on existing literature as well as our own research.

Our library of TE materials has several important objectives. First, it can help the community to collect the important information necessary to select the most promising TE systems to design thermoelectric generators. Second, the collected physical properties and associated data can be the starting point for machine-learning based investigations and selections of most promising TE systems. Similar approaches were recently followed for organic and perovskite-based materials used for solar cells design.

As a starting point, the TE library is constituted of two xls files collecting the important information on both p-type and n-type materials. During the course of the ITN project, these xls files will gradually collect more data including inorganic TE systems (no database for inorganic TE materials exists so far). To access the library, you can click on the links to the two xls files that will be updated during the project.


Michael Sommer
Synthesis and characterization of conjugated polymers exemplified by naphthalene diimide bithiophenecopolymers (PNDIT2)

Igor Zozoulenko
Conducting polymers for thermoelectric applications: electronic, transport and thermoelectric properties

Martin Brinkmann
Investigating the structure and morphology in polymer semiconductors by transmission electron microscopy

Mario Caironi
Introduction to printed electronics and printed OTEGs

Martijn Kemerink
The Peer-Review Process

Mariano Campoy-Quiles
High throughput screening of materials

Riccardo Rurali
Fundamentals of heat transport, basic ideas, different transport regimes, role of interfaces (boundary resistance, nanowires, etc)

Sebastian Reparaz
State of the art techniques to measure thermal properties

Mariano Campoy-Quiles
Thermal conductivity of polymers

Research articles

HORATES research published peer-reviewed journals.


  • Brunetti, I.; Dash, A.; Scheunemann, D.; Kemerink, M.; Is the field of organic thermoelectrics stuck? J. Mater. Res. 2024
  • Dörling, B.; Hawkey, A.; Zaumseil, J.; Campoy-Quiles, M. Strong dependence of air stability on thickness in n-doped carbon nanotube thermoelectrics. Appl. Phys. Lett. 2024, 124, 113302.
  • Pataki, N. J.; Zahabi, N.; Li, Q.; Rossi, P.; Cassinelli, M.; Butti, M.; Massetti, M.; Fabiano, S.; Zozoulenko, I.; Caironi, M. A Rolled Organic Thermoelectric Generator with High Thermocouple Density. Adv. Funct. Mater. 2024, 2400982.
  • Hinojosa, D. R.; Pataki, N. J.; Rossi, P.; Erhardt, A.; Guchait, S.; Pallini, F.; McNeill, C.; Müller, C.; Caironi, M. and Sommer, M., Solubilizing Benzodifuranone-Based Conjugated Copolymers with Single-Oxygen-Containing Branched Side Chains. ACS Appl. Polym. Mater. 2024, 6, 457.
  • Paleti, S. H. K.; Kim, Y.; Kimpel, J.; Craighero, M.; Haraguchi, S. and Müller, C., Impact of doping on the mechanical properties of conjugated polymers. Chem. Soc. Rev., 2024
  • Östergren, I.; Darmadi, I.; Lerch, S.; da Silva, R. R.; Craighero, M.; Paleti, S. H. K.; Moth-Poulsen, K.; Langhammer, C. and Müller, C. A surface passivated fluorinated polymer nanocomposite for carbon monoxide resistant plasmonic hydrogen sensing., J. Mater. Chem. A, 2024, 12, 7906-7915


  • Liu, J.; Craighero, M.; Gupta, V. K.; Scheunemann, D.; Paleti,S. H. K.; Järsvall, E.; Kim, Y.; Xu, K.; Reparaz, J. S.; Koster, L. J. A.; Campoy-Quiles, M.; Kemerink, M. ; Martinelli, A. and Müller, C., Electrically Programmed Doping Gradients Optimize the Thermoelectric Power Factor of a Conjugated Polymer. Adv. Funct. Mater. 2024, 2312549.
  • Dash, A.; Guchait, S.; Scheunemann, D.; Vijayakumar, V.; Leclerc, N.; Brinkmann, M. and Kemerink, M., Spontaneous Modulation Doping in Semi-Crystalline Conjugated Polymers Leads to High Conductivity at Low Doping Concentration., Adv. Mater. 2023, 2311303
  • Petsagkourakis, I.; Riera‐Galindo, S.; Ruoko, T.‐P.; Strakosas, X.; Pavlopoulou, E.; Liu, X.; Braun, S.; Kroon, R.; Kim, N.; Lienemann, S.; Gueskine, V.; Hadziioannou, G.; Berggren, M.; Fahlman, M.; Fabiano, S.; Tybrandt, K. and Crispin, X., Improved Performance of Organic Thermoelectric Generators Through Interfacial Energetics. Adv. Sci. 2023, 10, 2206954
  • Túnica, M.; Floris, P. S.; Torres, P. and Rurali, R., Effects of vacancies on the thermal conductivity of Si nanowires. Phys. Chem. Chem. Phys. 2023, 25, 19660-19665,
  • Zahabi, N.; Baryshnikov, G.; Linares, M. and Zozoulenko, I., Charge carrier dynamics in conducting polymer PEDOT using ab initio molecular dynamics simulations. J. Chem. Phys. 2023, 159, 154801,
  • Craighero, M.; Guo, J.; Zokaei, S.; Griggs, S.; Tian, J.; Asatryan, J.; Kimpel, J.; Kroon, R.; Xu, K.; Reparaz, J. S.; Martín, J.; McCulloch, I.; Campoy-Quiles, M.; and Müller, C., Impact of Oligoether Side-Chain Length on the Thermoelectric Properties of a Polar Polythiophene. ACS Appl. Electron. Mater. 2023, Article ASAP,
  • Xu, K.; Guo, J.; Raciti, G.; Goni, A. R.; Alonso, M. I.; Borrisé, X.; Zardo, I.; Campoy-Quiles, M.; Reparaz, J. S., In-Plane Thermal Diffusivity Determination Using Beam-Offset Frequency-Domain Thermoreflectance With a One-Dimensional Optical Heat Source. Int. J. Heat Mass Transf. 2023, 14, 124376,
  • Guchait, S.; Zhong, Y., Brinkmann, M., High-Temperature Rubbing: An Effective Method to Fabricate Large-Scale Aligned Semiconducting and Conducting Polymer Films for Applications in Organic Electronics. Macromolecules 2023,
  • Guchait, S.; Herrmann, L.; Kadri, K.; Leclerc, N.; Tran Van, F.; Brinkmann, M., Impact of Regioregularity on Alignment and Thermoelectric Properties of Sequentially Doped and Oriented Films of Poly(3-hexylthiophene). ACS Appl. Polym. Mater. 2023, 5, 5676.
  • Mone, M.; Kim, Y.; Darabi, S.; Zokaei, S.; Karlsson, L.; Craighero, M.; Fabiano, S.; Kroon, R.; Müller, C., Mechanically Adaptive Mixed Ionic-Electronic Conductors Based on a Polar Polythiophene Reinforced with Cellulose Nanofibrils. ACS Appl. Mater. Interfaces 2023, 15, 28300.
  • Floris, P. S.; Melis, C., Rurali, R., Interplay Between Doping, Morphology, and Lattice Thermal Conductivity in PEDOT:PSS. Adv. Funct. Mater. 2023, 33, 2215125.


  • Dash, A.; Scheunemann, D.; Kemerink, K., Comprehensive Model for the Thermoelectric Properties of Two-Dimensional Carbon Nanotube Networks. Phys. Rev. Applied 2022, 18, 064022.
  • Pataki, N.; Rossi, P.; and Caironi, M. Solution processed organic thermoelectric generators as energy harvesters for the Internet of Things, Appl. Phys. Lett., 2022, 121, 230501
  • Hultmark, S.; Craighero, M.; Zokaei, S.; Kim, D.; Järsvall, E.; Farooqi, F.; Marina, S.; Kroon, R.; Martin, J.; Zozoulenko, I.; and Müller, C., Impact of Oxidation-Induced Ordering on the Electrical and Mechanical Properties of a Polythiophene Co-Processed with Bistriflimidic Acid. J. Mater. Chem. C, 2022.
  • Zeng, H.; Durand, P.; Guchait, S.; Herrmann, L.; Kiefer, C.; Leclerc, N.; Brinkmann, M., Optimizing Chain Alignment and Preserving the Pristine Structure of Single-Ether Based PBTTT Helps Improve Thermoelectric Properties in Sequentially Doped Thin Films. J. Mater. Chem. C 2022, 10, 15883–15896.
  • Scheunemann, D.; Järsvall, E.; Liu, J.; Beretta, D.; Fabiano, S.; Caironi, M.; Kemerink, M.; Müller, C., Charge Transport in Doped Conjugated Polymers for Organic Thermoelectrics. Chem. Phys. Rev. 2022, 3, 021309.
  • Stegerer, D.; Pracht, M.; Günther, F.; Sun, H.; Preis, K.; Zerson, M.; Maftuhin, W.; Tan, W. L.; Kroon, R.; McNeill, C. R.; Fabiano, S.; Walter, M.; Biskup, T.; Gemming, S.; Magerle, R.; Müller, C.; Sommer, M., Organogels from Diketopyrrolopyrrole Copolymer Ionene/Polythiophene Blends Exhibit Ground-State Single Electron Transfer in the Solid State. Macromolecules 2022, 55, 4979-4994.
  • Zhong, Y., Untilova, V., Muller, D., Guchait, S., Kiefer, C., Herrmann, L., Zimmermann, N., Brosset, M., Heiser, T., Brinkmann, M., Preferential Location of Dopants in the Amorphous Phase of Oriented Regioregular Poly(3-hexylthiophene-2,5-diyl) Films Helps Reach Charge Conductivities of 3000 S cm−1. Adv. Funct. Mater. 2022, 32, 2202075.
  • Marks, A.; Chen, X.; Wu, R.; Rashid, R. B.; Jin, W.; Paulsen, B. D.; Moser, M.; Ji, X.; Griggs, S.; Meli, D.; Wu, X.; Bristow, H.; Strzalka, J.; Gasparini, N.; Costantini, G.; Fabiano, S.; Rivnay, J.; McCulloch, I. Synthetic Nuances to Maximize n-Type Organic Electrochemical Transistor and Thermoelectric Performance in Fused Lactam Polymers. J. Am. Chem. Soc. 2022, 144, 4642.
  • Xu, K., Ruoko, T.-P., Shokrani, M., Scheunemann, D., Abdalla, H., Sun, H., Yang, C.-Y., Puttisong, Y., Kolhe, N. B., Figueroa, J. S. M., Pedersen, J. O., Ederth, T., Chen, W. M., Berggren, M., Jenekhe, S. A., Fazzi, D., Kemerink, M., Fabiano, S., On the Origin of Seebeck Coefficient Inversion in Highly Doped Conducting Polymers. Adv. Funct. Mater. 2022, 32, 2112276.
  • Derewjanko, D., Scheunemann, D., Järsvall, E., Hofmann, A. I., Müller, C., Kemerink, M., Delocalization Enhances Conductivity at High Doping Concentrations. Adv. Funct. Mater. 2022, 32, 2112262.
  • Wu, H.-Y., Yang, C.-Y., Li, Q., Kolhe, N. B., Strakosas, X., Stoeckel, M.-A., Wu, Z., Jin, W., Savvakis, M., Kroon, R., Tu, D., Woo, H. Y., Berggren, M., Jenekhe, S. A., Fabiano, S., Influence of Molecular Weight on the Organic Electrochemical Transistor Performance of Ladder-Type Conjugated Polymers. Adv. Mater. 2022, 34, 2106235.
  • M. Alsufyani, M.-A. Stoeckel, X. Chen, K. Thorley, R. K. Hallani, Y. Puttisong, X. Ji, D. Meli, B. D. Paulsen, J. Strzalka, K. Regeta, C. Combe, H. Chen, J. Tian, J. Rivnay, S. Fabiano, I. McCulloch, Lactone Backbone Density in Rigid Electron-Deficient Semiconducting Polymers Enabling High n-type Organic Thermoelectric Performance. Angew. Chem. Int. Ed. 2022, 61, e202113078.


  • Kemerink, M.; Müller, C.; Chabinyc, M. L., Brinkmann, M. Organic and hybrid thermoelectrics. Appl. Phys. Lett. 2021, 119, 260401.
  • Guo, H.; Yang, C.-Y.; Zhang, X.; Motta, A.; Feng, K.; Xia, Y.; Shi, Y.; Wu, Z.; Yang, K.; Chen, J.; Liao, Q.; Tang, Y.; Sun, H.; Woo, H. Y.; Fabiano, S.; Facchetti, A.; Guo, X. Transition metal-catalysed molecular n-doping of organic semiconductors. Nature 2021, 599, 67–73.
  • Ghosh, S.; Rolland, N.; Zozoulenko, I. Electronic structure, optical properties, morphology and charge transport in naphthalenediimide (NDI)-based n-type copolymer with altered π-conjugation: A theoretical perspective. Appl. Phys. Lett. 2021, 118, 223302.
  • Massetti, M.; Jiao, F.; Ferguson, A. J.; Zhao, D.; Wijeratne, K.; Würger, A.; Blackburn, J. L.; Crispin, X.; Fabiano, S. Unconventional Thermoelectric Materials for Energy Harvesting and Sensing Applications. Chem. Rev. 2021, 121, 12465–12547.