Amidine-based ligand modulation of excess lead iodide facilitating efficient and stable perovskite solar cells

Nano Energy, Journal Year: 2024, Volume and Issue: 131, P. 110251 - 110251

Published: Sept. 10, 2024

Language: Английский

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Highly Efficient and Stable Perovskite Solar Cells via a Multifunctional Curcumin-Modified Buried Interface

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

Published: Feb. 5, 2025

Language: Английский

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Two Birds with One Stone: Minimizing Voltage Deficit via Three Moieties of F, COOH, and NH₂ of Carbon Dots Modifying the SnO₂ Electron Transport Layer and Buried Interface for Flexible Perovskite Solar Cells

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

Published: March 17, 2025

Language: Английский

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Ultra‐Long 1D Double Perovskite CsAg_0.4Cu_1.6I₃ Single Crystal for UV Imaging Memory

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

Published: April 29, 2025

Abstract Emerging copper‐based lead‐free perovskites have garnered significant attention for ultraviolet (UV) photodetection due to their atmospheric stability and optoelectronic properties. However, practical applications are hindered by low carrier density limited device performance. In this work, a breakthrough is reported in synthesizing ultra‐long 1D double perovskite CsAg x Cu 2‐x I 3 (0≤x≤2) single crystals (SCs) via an anti‐solvent recrystallization method. The SCs achieve unprecedented lengths of 2.2 cm 0.4 1.6 2 (CAI123), setting new benchmarks Cu/Ag‐based perovskites. By tuning the Ag‐doping ratio, bandgap continuously modulated from 3.60 3.24 eV, enabling tailored responses. optimized ‐based photodetector exhibits exceptional performance at 360 nm, with peak responsivity 82.5 mA W −1 high detectivity 1.3 × 10 12 Jones (@ 3V; light intensity: 2.8 mW −2 ), superior than CsCu (20.7 ) CAI123 (15.8 ). Notably, detector array demonstrates pioneering UV imaging memory capabilities, retaining patterns over s slow release self‐trapped defect‐related states. This work not only advances synthesis eco‐friendly but also unlocks novel functionalities next‐generation optoelectronics sensing, imaging, devices.

Language: Английский

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Solution Deposition of High-Quality AgBiS₂ Thin Films via a Binary Diamine-Dithiol Solvent System

Published: April 21, 2025

Article Solution Deposition of High-Quality AgBiS₂ Thin Films via a Binary Diamine-Dithiol Solvent System Mehri Ghasemi 1,2,*, Dongxu He 2, Baohua Jia 1,* and Xiaoming Wen 1 School Science, RMIT University, Melbourne, VIC 3000, Australia 2 Chemical Engineering, University Queensland, Brisbane, QLD 4072, * Correspondence: [email protected] Received: 18 February 2025; Revised: 8 April Accepted: 10 Published: 21 2025 Abstract: Lead halide perovskites suffer from toxicity instability challenges due to their sensitivity various environmental factors, such as humidity, heat prolonged light illumination. Developing stable lead-free alternatives that can still be solution-processed has attracted significant research interests in the past years. Bismuth-based chalcogenide materials have emerged one promising candidate. In particular, silver bismuth disulfide (AgBiS2) garnered increasing interest its high absorption coefficient (105–103 cm−1 400–1100 nm range) favourable bandgap ~1.3 eV. However, poor solubility AgBiS2 precursors conventional solvents hindered solution fabrication high-quality thin-films. While previous studies explored deposition techniques spray pyrolysis, hot-injection synthesis with ligand exchange, nanocrystal ink-based situ passivation, these methods often involve complex engineering, processing costs, or achieving uniform compact thin-film. this work, we introduce novel solution-based spin-coating approach for high-quality, phase-pure thin-films, overcoming limitations precursors. By employing binary chelating solvent mixture ethylenediamine 1,2-ethanedithiol, achieve bidentate coordination metal cations, enabling dissolution Ag2S Bi2S3 through chelation-assisted mechanism. This facilitates formation films precise roughness control. method eliminates need high-temperature vacuum-assisted crystallization, significantly enhancing scalability cost-effectiveness. A planar heterojunction device architecture incorporating TiO2 electron transport layer (FTO/c-TiO2/AgBiS2/P3HT/Au) is demonstrated initial power conversion efficiency (PCE) 0.62%, offering an effective charge extraction pathway. With further passivation doping optimizations, presents new, scalable route providing alternative ligand-engineered nanocrystal-based potential advantages stability, reproducibility, manufacturing compatibility.

Language: Английский

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Managing Solvent Complexes to Amplify Ripening Process by Covalent Interaction Driving Force Under External Field for Perovskite Photovoltaic

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

Published: Nov. 17, 2024

Abstract Up to now, post‐annealing is most commonly used post treat the perovskite film accelerate ripening process. Nonetheless, top‐down crystallization mechanism impedes efficient desolvation of solvent complexes. Thus, residual complexes tend accumulate at bottom during process and deteriorate device. Here, a new strategy with unique concept promoted amplify film, in which nematic thermotropic liquid crystal (LC) molecular introduced facilitate conversion by utilizing crystalline behavior under external field. Upon concurrent application thermal force fields, covalent interaction between LC generates driving force, promotes upward migration complexes, thereby facilitating their engagement In addition, fields assists flattening grain boundary grooves. Therefore, quality improved efficiently amplified adequately handled buried interface. Based on positive effects, devices achieve champion efficiency 25.24%, sustained ≈75% its initial level even after undergoing damp heat test (85 °C/85% RH) for 1400 h.

Language: Английский

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Pyridine-Anchored Small Molecule Interlayer Enables Defect Passivation and Enhanced Carrier Transport for Perovskite Solar Cells

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(35), P. 8949 - 8955

Published: Aug. 26, 2024

Engineering of the interface between perovskite and hole transport layer (HTL) has been crucial to achieving high performance. In this study, two interfacial materials, MN-CZ CN-CZ, are designed by systematically regulating group substitution site study relationship spatial conformation passivation effect. The groups CN-CZ molecules exhibit a stronger "vector addition" effect, resulting in larger molecular dipoles enhanced defect energy level regulation effects. Consequently, CN-CZ-based solar cell (PSC) shows efficiency 23.8%, which is much higher than that reference device. Meanwhile, humidity thermal stability unencapsulated device have significantly improved.

Language: Английский

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Pioneering non-thermal plasma as a defect passivator: a new Frontier in ambient metal halide perovskite synthesis

Materials Horizons, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Non-thermal plasma provides a new realm, facilitating the synthesis and defect passivation of perovskite nanoparticles.

Language: Английский

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2D Printed Plasmonic Nanoparticle Array Incorporated Formamidinium-Based High-Performance Self-Biased Perovskite Photodetector

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(37), P. 49544 - 49555

Published: Sept. 4, 2024

Utilizing noble metal nanoparticles through novel technologies is a promising avenue for enhancing the performance of organic/inorganic photodetectors. This study investigates enhancement Formamidinium-based perovskite (Pe) photodetectors (PDs) incorporation plasmonic silver (Ag NPs) arrays using 2D printing technique. The Ag NPs leads to major improvement in planar PD device, which attributed increased light absorption, hot electron generation, and more efficient charge extraction transport. unique aspect this lies method incorporating two-dimensional technology. approach offers several advantages over traditional methods, including lower cost, nonvacuum operation, compatibility with room temperature fabrication. printed plasmon-enhanced optimized exhibits remarkable metrics, peak responsivity 1.03 A/W at 5 V external bias, significantly high compared reported devices. Moreover, demonstrates exceptional detectivity value 3.7 × 10

Language: Английский

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Regulation of the Buried Interface to Achieve Efficient HTL-Free All-Inorganic CsPbI₂Br-Based Perovskite Solar Cells

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(42), P. 57412 - 57420

Published: Oct. 10, 2024

The large voltage loss (Vloss) mainly stems from the mismatch between perovskite film and electron transport layer in CsPbI2Br-based all-inorganic solar cells (I-PSCs), which restricts power conversion efficiency (PCE) of devices. To address this issue, potassium benzoate (BAP) is first introduced as a bifunctional passivation material to regulate TiO2/CsPbI2Br interface, reduce Vloss, improve photovoltaic performance I-PSCs. Eventually, champion PCE I-PSCs without hole modified by BAP (Target-PSCs) improves 14.90% 12.14% reference PSCs. open-circuit (Voc) increases 1.27 V initial 1.14 after modification. A series characterizations show that modification can not only optimize energy level alignment but also passivize surface defects caused uncoordinated Cs+/Pb2+. Moreover, Target-PSCs encapsulation demonstrate better thermal stability, maintain 107.6% original annealing at 160 °C for 140 min humid air. While PSCs 76.5% their same process. This work provides simple strategy modify buried interface

Language: Английский

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