Buried interface modulation by rubidium dihydrogen phosphate towards highly effective perovskite solar cells

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 151128 - 151128

Published: April 8, 2024

Language: Английский

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Efficient 1.77 eV-bandgap perovskite and all-perovskite tandem solar cells enabled by long-alkyl phosphonic acid

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Incorporating dodecylphosphonic acid additives into 1.77 eV-bandgap perovskites enabled single-junction solar cells to achieve a PCE of 20.2%. Tandem further reached impressive PCEs 27.41% (two-terminal) and 28.65% (four-terminal).

Language: Английский

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Implementing a Two‐in‐One Defect Passivation Strategy Utilizing CsX for High‐Performance Printable Carbon‐Based Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Abstract In the rapidly advancing realm of perovskite solar cells, rectification defects has surfaced as a crucial scientific challenge. The control over defect states, especially in printable mesoscopic cells (p‐MPSCs), is hindered by complexities screen‐printing technology. Here novel “two‐in‐one” passivation strategy presented, through doping TiO 2 paste with cesium halide salts (CsX, where X = F, Cl, Br, I) to integrate all‐inorganic Cs halides, particularly CsF, into electron transport layer p‐MPSCs. Owing robust interaction between F − ions and compared + ions, inability infiltrate lattice, play distinct roles starting from buried interface Specifically, can rectify oxygen vacancies on surface, thus alleviating residual stress at perovskite's interface. Simultaneously, diffuses top mends methylamine vacancies. As result, PCE optimal device, based F‐doped , witnesses significant improvement 16.18% (control) 18.24%. two‐in‐one utilizing CsX well realize rectification, thereby offering promising prospect for enhancement p‐MPSC performance.

Language: Английский

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Synthesis of Symmetrical Silane Containing P═O Bonds and Their Passivation of Perovskites

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 24, 2025

Perovskite quantum dots (QDs) exhibit unique advantages, including a wide color gamut, narrow full width at half-maximum, cost-effectiveness, and high-efficiency luminescence, positioning them as significant focus in contemporary optoelectronic research. Nevertheless, the synthesis of QDs often introduces crystal defects, while conventional situ ligands can detrimentally affect properties perovskites. To overcome these challenges, we synthesized symmetrical silane-based passivating agent containing phosphorus–oxygen double bonds. This enabled passivation perovskites, significantly improving their optical performance stability. Results showed that postpassivation demonstrated bright green photoluminescence (PL) 525 nm, with 28% enhancement PL intensity, 16% increase yield, an average lifetime (τave) extended by 191.2 ns. Furthermore, thermal stability 80 °C improved 3.75-fold, under 84% relative humidity conditions increased 21%. 1,3-bis(3-diethoxyphosphorylpropyl)-1,1,3,3-tetramethyldisiloxane (SPE)-passivated perovskites are viable for practical applications.

Language: Английский

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Enhancing the Performance of Perovskite Environmental Sensors through the Synergistic Effect of the Natural Antioxidant

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

All-inorganic perovskite CsPbX3 is considered to be the next-generation optical material due its excellent properties and potential applications in optoelectronics. However, inherent ionic crystal property makes it susceptible interaction with moisture oxygen ambient atmosphere hinders development of stable devices. Herein, a natural nontoxic molecule, ascorbic acid (AA), introduced improve performance nanocrystals. Experimental results reveal that strong coordination between carbonyl groups undercoordinated Pb2+, together hydrogen bonding hydroxyl defects halide ions AA, suppress nonradiative recombination. In addition, synergistic effect C═O –OH structure exhibits stability bonding. Finally, demonstration humidity sensing based on perovskites has been presented. It shown sensor good sensitivity range 30%–80% relative humidity, detection limit 3.9% response time 46 s. This work provides low-cost, nontoxic, efficient modification approach demonstrates an easy way perovskite.

Language: Английский

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Dual-stage Crystallization Regulation for Efficient and Stable Perovskite Solar Cells

Materials Today Energy, Journal Year: 2025, Volume and Issue: unknown, P. 101836 - 101836

Published: Feb. 1, 2025

Language: Английский

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Efficiency enhancement in 4T perovskite/Si tandem solar cell by charge extraction management

Solar Energy Materials and Solar Cells, Journal Year: 2025, Volume and Issue: 285, P. 113510 - 113510

Published: Feb. 18, 2025

Language: Английский

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Perovskite Crystallization Regulation by a Green Antisolvent for High-Performance NiO_x-Based Inverted Solar Cells

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Environmentally friendly antisolvents are key to achieving efficient, reproducible, and sustainable perovskite solar cells (PSCs). Here, a comparison was made between the traditional highly toxic chlorobenzene (CB) antisolvent green ethyl acetate (EA) dimethyl carbonate (DMC). The employment of DMC shown result in formation films with enhanced grain size superior crystal quality. This leads an optimal energy level alignment electron transport layer, effectively mitigating nonradiative recombination caused by film imperfections, reducing loss organic components during annealing process, suppressing lead iodide phase. Finally, champion device, based on DMC, exhibited high power conversion efficiency (PCE) 25.18%, which is one PCEs reported for this device structure. Moreover, maintains 92% its original PCE after approximately 1000 h under environmental conditions.

Language: Английский

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Dual-Site Passivation Coupling Internal Encapsulation via 3,5-Bis(trifluoromethyl)benzenethiol for Efficient and Stable Perovskite Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

Perovskite solar cells (PSCs) have made significant progress in efficiency, but their long-term operational stability remains an important yet challenging issue. Here, a dual-site passivation coupling internal encapsulation strategy is developed by introducing 3,5-bis(trifluoromethyl)-benzenethiol (35BBT) at the perovskite (PVK)/hole transport layer (HTL) interface. 35BBT provides dual active sites containing sulfur (S) atoms and fluorine (F) atoms, where S sulfhydryl group F trifluoromethyl coordinate with unpaired Pb2+ to form bonds, meanwhile hydrogen bonds organic cations. This mitigates deep shallow defects PVK/HTL Notably, 35BBT, hydrophobic benzene rings covering layer, enables protect films from water oxygen invasion. Consequently, Ag-based device treatment achieves efficiency enhancement 22.03% 23.86%, retaining 89.1% of its initial even after 2000 h air exposure. fabricated also exhibits thermal 60 °C. study offers avenue for simultaneously passivating interface inhibiting water/oxygen erosion, thereby enabling fabrication efficient stable PSCs future commercial applications.

Language: Английский

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Edge electron state modulation achieving tin-based perovskite solar cells with efficiency over 15%

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 14, 2025

Language: Английский

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