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Three functionalized thienopyrazines (TPs), TP‐MN (1), TP‐CA (2), and TPT‐MN (3) were designed and synthesized as self‐assembled monolayers (SAMs) deposited on the NiOx film for tin‐perovskite solar cells (TPSCs). Thermal, optical, electrochemical, morphological, crystallinity, hole mobility, and charge recombination properties, as well as DFT‐derived energy levels with electrostatic surface potential mapping of these SAMs, have been thoroughly investigated and discussed. The structure of the TP‐MN (1) single crystal was successfully grown and analyzed to support the uniform SAM produced on the ITO/NiOx substrate. When we used NiOx as HTM in TPSC, the device showed poor performance. To improve the efficiency of TPSC, we utilized a combination of new organic SAMs with NiOx as HTM, the TPSC device exhibited the highest PCE of 7.7 % for TP‐MN (1). Hence, the designed NiOx/TP‐MN (1) acts as a new model system for the development of efficient SAM‐based TPSC. To the best of our knowledge, the combination of organic SAMs with anchoring CN/CN or CN/COOH groups and NiOx as HTM for TPSC has never been reported elsewhere. The TPSC device based on the NiOx/TP‐MN bilayer exhibits great enduring stability for performance, retaining ~80 % of its original value for shelf storage over 4000 h. [ABSTRACT FROM AUTHOR]

The inherent ambiguity in reconstructed images from coherent diffraction imaging (CDI) poses an intrinsic challenge, as images derived from the same dataset under varying initial conditions often display inconsistencies. This study introduces a method that employs the Noise2Noise approach combined with neural networks to effectively mitigate these ambiguities. We applied this methodology to hundreds of ambiguous reconstructed images retrieved from a single diffraction pattern using a conventional retrieval algorithm. Our results demonstrate that ambiguous features in these reconstructions are effectively treated as inter‐reconstruction noise and are significantly reduced. The post‐Noise2Noise treated images closely approximate the average and singular value decomposition analysis of various reconstructions, providing consistent and reliable reconstructions. [ABSTRACT FROM AUTHOR]

Photothermoelectric (PTE) materials have gained significant attention as a promising avenue for converting light into electricity. Herein, the PTE properties of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) are enhanced by introducing black phosphorus nanosheets (BP NSs) modified with silver nanoparticles (Ag@BP). Under 100 mW cm−2 illumination, the resulting PEDOT:PSS/Ag@BP nanocomposite film (P_Ag@BP) exhibits an output voltage of 528.4 μV compared to 300.9 μV for the PEDOT:PSS film. This is attributed to (i) the enhanced photothermal performance of P_Ag@BP, which generates a temperature difference of 18 °C under 100 mW cm−2 illumination compared to 10 °C for the PEDOT:PSS film and (ii) the enhanced thermoelectric performance of P_Ag@BP, with an increased power factor of 107.2 μW m−1 K−2 compared to 32.9 μW m−1 K−2 for the PEDOT:PSS film. Moreover, a photothermoelectric generator (PTEG) consisting of 36 legs of P_Ag@BP exhibits an open circuit voltage of 16.1 mV, a short circuit current of 47.9 μA, and an output power of 192.6 nW under 120 mW cm−2 illumination. Furthermore, when the PTEG is worn on the forearm and exposed to sunlight, it generates an output voltage of 9.2 mV, thus showcasing its potential application in wearable energy harvesting devices. [ABSTRACT FROM AUTHOR]

Doped polythiophene (PT)-based semiconductors are of significant interest in the field of organic electronics, and are designed for novel thermoelectric applications based on their remarkable electrical properties, ease of processing, and tunable molecular structures. In the present study, the effects of the vinyl linkers in the PTs are systematically investigated in order to understand the interdependence of the structural properties, thin film morphologies, and thermoelectric performance. In particular, the soluble poly(thienylene vinylene) (PTV)-based conjugated polymer, poly[3,4-bis(2-ethylhexyl)thienylene vinylene] (P3,4EHTV), is synthesized via halogen-free and transition metal-free polymerization, and compared with the often-studied poly[3-(ethylhexyl)thiophene] (P3EHT) analogue. In addition, the thermoelectric properties of these two PT films doped with tris(pentafluorophenyl)borane (B(C6F5)3, BCF) are characterized. Furthermore, the bipolaron states of the doped P3,4EHTV are retrieved via detailed ultra violet-visible-near infrared (UV-vis-NIR) and electron paramagnetic resonance (EPR) spectral analyses. Systematic microstructural characterizations reveal that the introduction of vinyl groups into the conjugated polymer backbone results in good miscibility with the BCF dopant, along with enhanced doping efficiency, thereby providing the appropriate sites for accommodating the dopant without disrupting the original chain packing and charge transport channels. The maximum power factor (PF) is measured as 1.47 μW m−1 K−2 for the BCF-doped P3,4EHTV with a molar ratio of 20%, due to the high electrical conductivity (σ) of 0.34 S cm−1, which is ten-fold higher than that of the P3EHT (0.17 μW m−1 K−2). The present study therefore provides a suitable methodology for the realization of doped polymers with good host-dopant miscibility, compatible morphologies, and undisrupted microstructural packing in order to favor an increased power factor by introducing vinylene linkers into the main chains of PTs. [ABSTRACT FROM AUTHOR]