Co‐Self‐Assembled Monolayers Modified NiO_x for Stable Inverted Perovskite Solar Cells

Advanced Materials, Год журнала: 2024, Номер 36(16)

Опубликована: Янв. 11, 2024

Abstract [4‐(3,6‐dimethyl‐9H‐carbazol‐9yl)butyl]phosphonic acid (Me‐4PACz) self‐assembled molecules (SAM) are an effective method to solve the problem of buried interface NiO x in inverted perovskite solar cells (PSCs). However, Me‐4PACz end group (carbazole core) cannot forcefully passivate defects at bottom film. Here, a Co‐SAM strategy is employed modify PSCs. doped with phosphorylcholine chloride (PC) form improve monolayer coverage and reduce leakage current. The phosphate ions (Cl − ) PC can inhibit surface defects. Meantime, quaternary ammonium Cl fill organic cations halogen vacancies film enable passivation. Moreover, promote growth crystals, collaboratively defects, suppress nonradiative recombination, accelerate carrier transmission, relieve residual stress Consequently, modified devices show power conversion efficiencies as high 25.09% well excellent device stability 93% initial efficiency after 1000 h operation under one‐sun illumination. This work demonstrates novel approach for enhancing performance PSCs by modifying on .

Язык: Английский

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Two-Dimensional Metal Halides for X-Ray Detection Applications

Nano-Micro Letters, Год журнала: 2023, Номер 15(1)

Опубликована: Май 20, 2023

Abstract Metal halide perovskites have recently emerged as promising candidates for the next generation of X-ray detectors due to their excellent optoelectronic properties. Especially, two-dimensional (2D) afford many distinct properties, including remarkable structural diversity, high energy, and balanced large exciton binding energy. With advantages 2D materials perovskites, it successfully reduces decomposition phase transition perovskite effectively suppresses ion migration. Meanwhile, existence a hydrophobic spacer can block water molecules, thus making obtain stability. All these attracted much attention in field detection. This review introduces classification summarizes synthesis technology performance characteristics direct detector, briefly discusses application scintillators. Finally, this also emphasizes key challenges faced by practical presents our views on its future development.

Язык: Английский

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Amidination of ligands for chemical and field-effect passivation stabilizes perovskite solar cells

Science, Год журнала: 2024, Номер 386(6724), С. 898 - 902

Опубликована: Ноя. 21, 2024

Surface passivation has driven the rapid increase in power conversion efficiency (PCE) of perovskite solar cells (PSCs). However, state-of-the-art surface techniques rely on ammonium ligands that suffer deprotonation under light and thermal stress. We developed a library amidinium ligands, interest for their resonance effect–enhanced N–H bonds may resist deprotonation, to stability layers surfaces. This strategy resulted >10-fold reduction ligand equilibrium constant twofold maintenance photoluminescence quantum yield after aging at 85°C illumination air. Implementing this approach, we achieved certified quasi–steady-state PCE 26.3% inverted PSCs; report retention ≥90% 1100 hours continuous 1-sun maximum point operation 85°C.

Язык: Английский

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Achievements, challenges, and future prospects for industrialization of perovskite solar cells

Light Science & Applications, Год журнала: 2024, Номер 13(1)

Опубликована: Сен. 3, 2024

Abstract In just over a decade, certified single-junction perovskite solar cells (PSCs) boast an impressive power conversion efficiency (PCE) of 26.1%. Such outstanding performance makes it highly viable for further development. Here, we have meticulously outlined challenges that arose during the industrialization PSCs and proposed their corresponding solutions based on extensive research. We discussed main in this field including technological limitations, multi-scenario applications, sustainable development, etc. Mature photovoltaic provide community with invaluable insights overcoming industrialization. upcoming stages advancement, has become evident addressing concerning long-term stability sustainability is paramount. manner, can facilitate more effective integration into our daily lives.

Язык: Английский

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Highly Luminescent and Stable Perovskite Quantum Dots Films for Light‐Emitting Devices and Information Encryption

Advanced Functional Materials, Год журнала: 2024, Номер 34(28)

Опубликована: Март 10, 2024

Abstract The inherent flexibility and excellent mechanical strength of lead halide perovskite quantum dots (LHP‐QDs) films have attracted much attention in the fields flexible lighting, displays, non‐planar x‐ray imaging, wearable optoelectronics. Unfortunately, complicated synthesis process poor stability limit its practical applications, hence there is an urgent need to develop a feasible fabrication for attain high device performance. Herein, molecular level hybridization bridged polysilsesquioxane (BPSQ) designed as matrix harvest both organics inorganics, resulting improved interfacial compatibility between CsPbBr 3 QDs through chemical bond anchoring. @3‐aminopropyl‐triethoxysilane (APTES)@BPSQ showcase bright narrow‐band photoluminescence, with photoluminescence yield 61% half‐peak full width at half maximum <17 nm. Notably, these demonstrate environmental stability, UV resistance, water (experiencing only 18% decrease luminescence intensity after 168 h immersion), high‐temperature (withstanding temperatures up 500 K). Furthermore, white light‐emitting diodes (WLEDs) anti‐counterfeiting patterns been fabricated using @APTES@BPSQ, highlighting their wide application potential devices information encryption.

Язык: Английский

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Towards operation‐stabilizing perovskite solar cells: Fundamental materials, device designs, and commercial applications

InfoMat, Год журнала: 2024, Номер 6(4)

Опубликована: Фев. 1, 2024

Abstract Over the last decade, perovskite solar cells (PSCs) have drawn extensive attention owing to their high power conversion efficiency (single junction: 26.1%, perovskite/silicon tandem: 33.9%) and low fabrication cost. However, short lifespan of PSCs with initial still blocks practical applications. This operational instability may originate from intrinsic extrinsic degradation materials or devices. Although lifetime has been prolonged through component, crystal, defect, interface, encapsulation engineering, so on, systematic analysis failure regularity for perspective devices against multiple operating stressors is indispensable. In this review, we start elaboration predominant pathways mechanism under working stressors. Then strategies improving long‐term durability respect fundamental materials, interface designs, device summarized. Meanwhile, key results discussed understand limitation assessing stability, potential applications in indoor photovoltaics wearable electronics are demonstrated. Finally, promising proposals, encompassing material processing, film formation, strengthening, structure designing, encapsulation, provided improve stability promote commercialization. image

Язык: Английский

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Performance optimization of lead-free KGeCl3 based perovskite solar cells using SCAPS-1D

Solar Energy, Год журнала: 2025, Номер 287, С. 113253 - 113253

Опубликована: Янв. 7, 2025

Язык: Английский

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Recent Advances in Patterning Strategies for Full-Color Perovskite Light-Emitting Diodes

Nano-Micro Letters, Год журнала: 2023, Номер 16(1)

Опубликована: Дек. 7, 2023

Metal halide perovskites have emerged as promising light-emitting materials for next-generation displays owing to their remarkable material characteristics including broad color tunability, pure emission with remarkably narrow bandwidths, high quantum yield, and solution processability. Despite recent advances pushed the luminance efficiency of monochromic perovskite diodes (PeLEDs) theoretical limits, current fabrication using spin-coating process poses limitations full-color displays. To integrate PeLEDs into display panels, it is crucial pattern red-green-blue (RGB) pixels, while mitigating issues such cross-contamination reductions in luminous efficiency. Herein, we present state-of-the-art patterning technologies development PeLEDs. First, highlight efficient Second, discuss various techniques MPHs (i.e., photolithography, inkjet printing, electron beam lithography laser-assisted lithography, electrohydrodynamic jet thermal evaporation, transfer printing) RGB pixelated These can be classified two distinct approaches: situ crystallization precursors colloidal nanocrystals. This review highlights advancements PeLEDs, paving way integrating panels.

Язык: Английский

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π-Interactions suppression of buried interface defects for efficient and stable inverted perovskite solar cells

Nano Energy, Год журнала: 2023, Номер 117, С. 108883 - 108883

Опубликована: Сен. 9, 2023

Язык: Английский

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Interfacial Pyro‐Phototronic Effect: A Universal Approach for Enhancement of Self‐Powered Photodetection Based on Perovskites with Centrosymmetry

Advanced Functional Materials, Год журнала: 2023, Номер 33(49)

Опубликована: Сен. 26, 2023

Abstract Utilizing the pyro‐phototronic effect presents a potent approach to augment efficacy of self‐powered photodetectors (PDs) that rely on metal halide perovskites (MHPs). Nevertheless, has thus far been restricted possessing non‐centrosymmetric crystal structure, limiting their scope application. This study introduces universal interfacial (IPPE) strategy MHP single crystals with centrosymmetry. The utilization heterojunctions or Schottky junctions resulted in observation typical four‐stage photoresponses rapid speed, thereby significantly enhancing performance PDs and expanding spectral response range. contact conditions, such as choice metals surface smoothness, have an important impact IPPE. IPPE is versatile technique can be employed fabricate based diverse 3D 2D perovskites. broadens phenomenon centrosymmetric perovskites, which offer advantages producing optoelectronic devices superior performance.

Язык: Английский

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