In‐Depth Investigation of Morphology Evolution in Highly Efficient Pseudo‐Planar Heterojunction All‐polymer Organic Photovoltaics

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 16, 2025

Abstract Pseudo‐planar heterojunction (PPHJ) structure using sequential deposition is an effective method for achieving high‐efficiency organic photovoltaics (OPVs). The crystallization and phase separation behavior during film‐forming process intricately related to morphology with PPHJ structure. Despite this, the relationship between these two factors remains ambiguous, thereby impeding further improvements in performance. To tackle this challenge, PM6 PY‐DT all‐polymer systems as models are utilized, combine theoretical calculations, situ spectroscopy, morphological characterization elucidate aforementioned relationship. Thermodynamically, can effectively suppress van der Waals forces, increase crystallinity of PM6, promote matching crystallinity. Kinetically, rate notably faster more sustained, facilitating development interpenetrating network enhanced Furthermore, driven by crystallization‐induced‐phase separation, characterized minimal intermixed content substantial domain size. Concurrently, layer swells a limited extent, downward diffusion PY‐DT, which promotes formation vertical Ultimately, favorable achieved optimizing process, resulting power conversion efficiency (PCE) 18.08%, highest PCEs reported binary OPVs based on date.

Language: Английский

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Artificial Neural Network-Based Feedforward-Feedback Control for Parabolic Trough Concentrated Solar Field

Sustainability, Journal Year: 2025, Volume and Issue: 17(8), P. 3334 - 3334

Published: April 9, 2025

The intermittency and fluctuation of solar irradiation pose challenges to the stable control PTC collector loops. Therefore, this study proposes an Artificial Neural Network-based Feedforward-Feedback (ANN-FF-FB) model, which integrates prediction, feedforward, feedback regulation form a composite strategy for collecting system. During step changes in intensity, model can quickly stably adjust outlet temperature, with response time one-quarter that conventional PID maximum overshoot only 0.5 °C, steady-state error 0.02 it effectively reduces entropy production transient process, improving thermodynamic performance. Additionally, ANN-FF-FB model’s during setpoint temperature adjustment is one-third 0.03 °C. Ultimately, system stabilizes at 393 efficiency increasing 0.212, being less than 1

Language: Английский

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Boosting the performance of ternary solar cells by fine-tuning the distribution of the third component

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162693 - 162693

Published: April 1, 2025

Language: Английский

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Rational halogenation on aromatic-core of tethered small molecule acceptors for high-performance polymer solar cells

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162657 - 162657

Published: April 1, 2025

Language: Английский

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