Science China Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 25, 2024
Language: Английский
Nano Letters, Journal Year: 2024, Volume and Issue: 24(4), P. 1447 - 1453
Published: Jan. 22, 2024
Passive solar heating and radiative cooling have attracted great interest in global energy consumption reduction due to their unique electricity-free advantage. However, static single radiation or would lead overcooling overheating cold hot weather, respectively. To achieve a facile, effective approach for dynamic thermal management, novel structured polyethylene (PE) film was engineered with switchable mode obtained through moisture transfer technique. The 100 μm PE showed excellent modulation from 0.92 (dried state) 0.32 (wetted 0.86 0.05 state). Outdoor experiments demonstrated regulation during both daytime nighttime. Furthermore, our designed can save 1.3-41.0% of annual across the whole country China. This dual mechanism is very promising guiding scalable approaches energy-saving temperature regulation.
Language: Английский
Citations
25
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(14)
Published: Feb. 8, 2024
Abstract Poly(3‐hexylthiophene) (P3HT) acting as one of the most popular and low‐cost polymers is quite suitable for commercialization organic solar cells but suffers from low power conversion efficiency (PCE) because limited matching non‐fullerene acceptors (NFAs). One important reason that restricts enhancement remains unresolved undisclosed contributions subtle structure modification to obvious performance change. In combination with previous reports this work, herein A 2 ‐A 1 ‐D‐A type NFAs single, dual, triple modifications based on parent BTA3 designed, including benzyl‐substitution group (namely Bn modification), fluorine‐substitution F thieno[3,2‐ b ]thiophene‐substitution D TT modification). It finally found binary devices P3HT these underwent unexpected variations in aspect molecular optoelectronic property, blend morphological feature charge generation process. The (including Bn, F, TT) gives full play their unique advantages consequently increases PCE by 60%. To knowledge, obtained optimal highest values NFAs. This study provides clearer insights into rational substitutions matched high‐performance photovoltaics.
Language: Английский
Citations
8
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(27), P. 16251 - 16267
Published: Jan. 1, 2024
We review polythiophene and its derivative (PT)-based polymer donors for all-PSCs, focusing on material design, morphology optimization strategies, the selection design of acceptors that complement their properties.
Language: Английский
Citations
7
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(35)
Published: June 14, 2024
Abstract Low cost and printing friendly fabrication of organic solar cells (OSCs) require thick‐film devices with simply structured photoactive molecules. Thus, achieving high power conversion efficiency (PCE) for non‐fused ring acceptor‐based thickness is great significance. Herein, by transforming traditional blend casting method to emerging sequential deposition (SD) method, D18:A4T‐16 active exhibits large improvement from 8.02% 14.75% in 300 nm thick devices. Systematic morphological photophysical characterizations showcase the effectiveness SD processing sufficient donor/acceptor interpenetration vertical stratification, which eliminates dilemma charge generation/transport films. Meanwhile, D18 bottom layer proven helpful realizing fast evaporation postdeposited poor solvent, resulting naturally thickened well‐regulated crystallization. Furthermore, a new index emphasize based on nonfused acceptors, called figure‐of‐merit‐X (FoM‐X), has been defined. The processed herein, nm, 500 800 thicknesses possess leading FoM‐X values.
Language: Английский
Citations
7
Progress in Polymer Science, Journal Year: 2024, Volume and Issue: unknown, P. 101899 - 101899
Published: Oct. 1, 2024
Language: Английский
Citations
5
Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(47)
Published: Aug. 27, 2024
Abstract Polythiophenes are the most appealing donor materials in organic solar cells (OSCs) due to their simple chemical structures. However, top‐performance polythiophenes typically synthesized via Stille polycondensation, which is problematic significant toxicity and poor atom economy. By contrast, direct arylation polycondensation (DArP) an eco‐friendly, atom‐efficient alternative for synthesizing conjugated polymers, while best efficiency DArP‐derived below 12%. This study reports a series of polythiophene‐based donors DArP. Among these, PT4F‐Th reaches power conversion (PCE) 16.4%, not only matches current record materials, but also marks highest PCE achieved by date. The superior performance largely attributed its optimal temperature‐dependent aggregation behavior moderate miscibility with acceptors, along crystallinity among candidates, resulting favorable blend film morphology. underscores potential developing high‐performance eco‐friendly OSCs.
Language: Английский
Citations
3
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: April 7, 2025
Abstract Current state‐of‐the‐art organic photovoltaic (OPV) films, composed of conjugated polymer donors and small molecule acceptors, are often limited by the high brittleness their rigid backbones, which restricts application in wearable devices. In contrast, all‐polymer OPVs have demonstrated enhanced intrinsic stretchability, but further advancements necessary to meet demands. Here, an uncharted strategy is reported enhance mechanical stretchability performance incorporating a nearly‐amorphous polymer, poly(indacenodithiophene‐co‐benzothiadiazole) (IDTBT) into layer‐by‐layer structured active layer. IDTBT possesses fracture strain ≈80%, significantly outperforming well‐known donor polymers like PM6. The incorporation enhances properties, with both optimized at low contents. More importantly, intrinsically stretchable demonstrate superior stability impressive power conversion efficiency 14.2%, highest date this category. Particularly, IDTBT‐strengthened retain 72% initial under tensile 50%, 68% even after being stretched hundreds times 30% strain, demonstrating exceptional stability. This approach underscores potential semiconductors designing highly OPVs, paving way for seamless integration electronics.
Language: Английский
Citations
0
Polymers for Advanced Technologies, Journal Year: 2025, Volume and Issue: 36(5)
Published: May 1, 2025
ABSTRACT In photovoltaic polymer synthesis research, it is routine to adapt chemical reactions while respecting the stoichiometric proportions of reagents. Generally, researchers reduce amounts reagents save materials or adjust necessary quantity according need avoid waste, as these undergo changes and alterations in their properties over time, compromising performance devices. P3HT considered a reference field solar cells. This study demonstrated that downscaling significantly influences optoelectronic device performance. To further investigate this effect, devices were fabricated on large‐area substrates with varying pixel sizes, allowing for comprehensive assessment impact laboratory‐scale reductions potential implications market applications. The scale‐down 50% reaction system decreases device. standard performed duplicate also efficiency similar method. Synthesis using close 3.5 g monomer resulted better properties, molar mass, efficiencies up 3.04% ± 0.11% 0.16 cm 2 2.23% 0.14% large area 1 .
Language: Английский
Citations
0
Deleted Journal, Journal Year: 2025, Volume and Issue: unknown, P. 100072 - 100072
Published: May 1, 2025
Language: Английский
Citations
0
Dyes and Pigments, Journal Year: 2024, Volume and Issue: 228, P. 112226 - 112226
Published: May 14, 2024
Language: Английский
Citations
2