Transducer-free probing of thermal transport in semiconducting molecular and polymer thin films

Kocoj, Conrad A.; Jang, Houk (ORCID:0000000272361134); Chen, Du; Makala, Manikanta; Yang, Seunghoon; Zhang, Yugang; Jang, Houk; Xia, Yi; Jurchescu, Oana D.; Guo, Peijun

doi:10.1038/s44435-026-00016-3

DOE OSTI · 3798013

Transducer-free probing of thermal transport in semiconducting molecular and polymer thin films

Kocoj, Conrad A.·Jang, Houk (ORCID:0000000272361134)·Chen, Du·Makala, Manikanta·Yang, Seunghoon·Zhang, Yugang·Jang, Houk·Xia, Yi·Jurchescu, Oana D.·Guo, Peijun

View original source ↗Read source document ↗Export metadata ↓

Abstract

The source did not provide an abstract. Follow the original record for more information.

Explore related subjects

77 NANOSCIENCE AND NANOTECHNOLOGY

Keep this discovery

BibTeX RIS

Kocoj, Conrad A., Jang, Houk (ORCID:0000000272361134), Chen, Du, Makala, Manikanta, Yang, Seunghoon, Zhang, Yugang, Jang, Houk, Xia, Yi, Jurchescu, Oana D., Guo, Peijun. 2026-09-01. Transducer-free probing of thermal transport in semiconducting molecular and polymer thin films. https://doi.org/10.1038/s44435-026-00016-3

Cite the original work for its findings. Save a collection to share your selection of sources.

Discover connections

77 NANOSCIENCE AND NANOTECHNOLOGY subject

Connections use source metadata and explicit phrase matches, not verified experimental comparisons.

KEEP EXPLORING

Related reports

DOE OSTI2026

Flow synthesis of iron oxide nanoparticles: using multiple precursor additions to improve size control

Controlling the size of iron oxide nanoparticles while maintaining uniformity in flow-based synthesis systems has been a great challenge in nanoparticle synthesis. Using an extended LaMer mechanism, we improve both the size and shape uniformity as compared to a conventional flow synthesis. The key to this approach is the injection of additional Fe precursor during the flow reaction, providing extra precursor during the growth process leading to a size focusing step. This approach has also allowed for the systematic variation of the nanoparticle size produced in the flow reaction. This work represent a new synthetic concept for improving the size uniformity of iron oxide nanoparticles in flow-based synthesis and has potential for application across a wide range of nanoparticle systems.

36 MATERIALS SCIENCE↗

DOE OSTI2026

Self-Leveling Inks for Printing Ultra-uniform Perovskite Solar Modules by Flexography

The report describes the development of scalable manufacturing methods for high-performance, stable perovskite solar modules using flexographic printing. The project developed self-leveling perovskite inks that exploit Marangoni flows to reduce coating defects and improve large-area film uniformity. Bayesian optimization was integrated with high-throughput photoluminescence mapping and photovoltaic measurements to efficiently optimize ink formulations and printing conditions. The resulting printed perovskite solar cells achieved champion power conversion efficiencies above 21.6%, with median efficiencies exceeding 20% across large device batches. At the module scale, printed devices achieved active-area efficiencies up to approximately 17.3% on 25 cm² substrates. The project also demonstrated improved performance and stability using additively patterned interconnections compared with laser-scribed controls. Overall, the work establishes a data-driven, roll-compatible pathway toward high-throughput, low-capital-cost manufacturing of uniform and stable perovskite photovoltaics.

14 SOLAR ENERGY↗

DOE OSTI2026

Microscopic Scattering Approach to In-Gap States

We develop a microscopic scattering formalism to describe Yu-Shiba-Rusinov (YSR) states due to a single Cr adatom on the Bi-terminated surface of beta Bi2Pd, by combining ab initio Wannier functions with a real-space Green's function approach in the Bogoliubov-de Gennes formalism[1]. Our framework reproduces key scanning tunneling spectroscopy features, including a single particle-hole asymmetric YSR peak and isotropic dIdV maps around the impurity. Decomposing the YSR states reveals contributions from four nearly degenerate C4v representations, with energy broadening masking their individual signatures. Spin-orbit coupling induces partial spin polarization, while the spatial asymmetry between particle and hole components arises from Cr d-Bi p hybridization. These results highlight the importance of realistic band structures and microscopic modeling for interpreting STM data for magnetic in-gap states on superconductors. Further advances examining layered 2D material surfaces, such as NbSe2, will be described[2]. For this system the superconducting properties are obtained from a full anisotropic Eliashberg calculation of the superconducting order parameter along with the charge density wave gap. Additional features associated with proposals to measure the dynamics of these individual YSR states will be presented. [1] arXiv:2507.08740 [2] arXiv:2507.11856

75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND↗