Photovoltaics for indoor energy harvesting

Nano Energy, Journal Year: 2024, Volume and Issue: 128, P. 109932 - 109932

Published: June 29, 2024

The Internet of Things revolution requires a low-cost, stable, and highly efficient power source to allow autonomous operation smart objects wireless sensors even at very low light levels. Indoor photovoltaics (PV) has the potential fulfil these requirements, providing independence from main grid, portability, improved sustainability for low-consumption devices. Whereas polycrystalline silicon dominates outdoor solar cell market, amorphous is commercially more suited products used inside buildings, delivering higher efficiencies under indoor illumination (with its extremely lower intensities narrower spectra compared sunlight). In recent years, there been remarkable rise in research development new generation photovoltaic cells, i.e., those based on organic, dye-sensitized perovskite absorbers, focused applications with rising well above possible sun reaching surpassing 30 % conversion efficiency threshold. This review provides systematic overview PV devices, highlighting progress achieved strategies design cells as issues be resolved this field continue prosper. We also analyse differences device meant outdoors vs indoors. Markets tapped by harvesting are huge, ranging building-integrated elements consumer products, biomedical communication technologies.

Language: Английский

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Achieving over 42 % indoor efficiency in wide-bandgap perovskite solar cells through optimized interfacial passivation and carrier transport

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 498, P. 155512 - 155512

Published: Sept. 6, 2024

Language: Английский

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Enhancement of Efficiency of Perovskite Solar Cells with Hole-Selective Layers of Rationally Designed Thiazolo[5,4-d]thiazole Derivatives

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(23), P. 30239 - 30254

Published: May 29, 2024

We introduce thiazolo[5,4-d]thiazole (TT)-based derivatives featuring carbazole, phenothiazine, or triphenylamine donor units as hole-selective materials to enhance the performance of wide-bandgap perovskite solar cells (PSCs). The optoelectronic properties underwent thorough evaluation and were substantially fine-tuned through deliberate molecular design. Time-of-flight hole mobility TTs ranged from 4.33 × 10–5 1.63 10–3 cm2 V–1 s–1 (at an electric field 1.6 105 V cm–1). Their ionization potentials −4.93 −5.59 eV. Using density functional theory (DFT) calculations, it has been demonstrated that S0 → S1 transitions in with carbazolyl ditert-butyl-phenothiazinyl substituents are characterized by local excitation (LE). Mixed intramolecular charge transfer (ICT) LE occurred for compounds containing ditert-butyl carbazolyl-, dimethoxy alkoxy-substituted triphenylamino moieties. selected TT used preparation layers (HSL) PSC structure glass/ITO/HSLs/Cs0.18FA0.82Pb(I0.8Br0.2)3/PEAI/PC61BM/BCP/Ag. (TTP-DPA) be effective material HSL. Its layer also functioned well interlayer, improving surface control HSL_2PACz (i.e., reducing energy 2PACz 66.9 52.4 mN m–1), thus enabling precise over growth level alignment carrier extraction/transportation at hole-selecting contact PSCs. 2PACz/TTP-DPA-based devices showed optimized 19.1 37.0% under 1-sun 3000 K LED (1000 lx) illuminations, respectively. These values represent improvements those achieved bare 2PACz-based devices, which attained efficiencies 17.4 32.2%, findings highlight promising potential enhancement

Language: Английский

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Bipolar Pseudohalide Ammonium Salts Bridged Perovskite Buried Interface toward Efficient Indoor Photovoltaics

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

Published: June 4, 2024

Abstract Due to the higher photon energy under indoor photovoltaic conditions, using perovskite materials with wider bandgaps has become a consensus. However, updating absorbers requires additional adaptations involving at least two layers of transport and interfaces, increasing development complexity. This study acknowledges that buried interface is primary location for generation photoinduced carriers, achieving efficient carrier separation this will solve most open circuit voltage ( V OC ) loss issues encountered in transitioning from solar photovoltaics photovoltaics. Therefore, class bipolar pseudohalide ammonium salts proposed use as bridging agents effectively resolve lattice misalignment insufficient driving force when broadening bandgap, thereby reducing The optimized device exhibits an excellent photoelectric conversion efficiency (PCE) 41.04%, record‐high 1.08 V. It also demonstrates impressive long‐term operational stability T 80 lifetime 1000 h. Substituting various non‐buried different categories wide‐bandgap does not alter effectiveness, proving its universality.

Language: Английский

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Enhanced Indoor Perovskite Solar Cells: Mitigating Interface Defects and Charge Transport Losses with Polyarene‐Based Hole‐Selective Layers

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

Published: Nov. 29, 2024

Abstract The study designs and synthesizes non‐planar, propeller‐shaped hexaarylbenzene‐type (HAB) compound K5‐36 hexa‐ peri ‐hexabenzocoronene (HBC)‐based K5‐13 (with a cyclized core), as cost‐effective high‐yielding hole selective layers (HSLs) for perovskite solar cells (PSC). Using p–i–n device structure with ITO/4PADCB/HAB or HBC without)/perovskite/PDADI/PC 61 BM/BCP/Ag, the interaction is investigated between synthesized materials self‐assembled monolayer (4PADCB) elucidating mechanisms influencing growth of wide bandgap Cs 0.18 FA 0.82 Pb(I 0.8 Br 0.2 ) 3 perovskite. facilitates films larger grains lower defect density, while promoting energy level alignment at HSL/perovskite interface. These modifications effectively suppressed non‐radiative recombination, resulting in higher open‐circuit voltage 1.2V power conversion efficiency (PCE) exceeding 20% under AM 1.5G conditions. Under 3000K LED (1000 lux) illumination, PCE 4PADCB/ ‐based PSCs significantly increased from 38.02 ± 0.38% (4PADCB PSC) to 41.80 0.57%. Moreover, incorporating ‐ demonstrate exceptional stability, retaining ≈88.5% 98.2% their initial after 70 days storage glove box. findings highlight potential polyarene‐based HSLs promising approach improving PSC stability.

Language: Английский

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Leveraging Multilayer Hole Selective Layers to Boost Organic Photovoltaic Power Conversion Efficiency

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

Published: Jan. 19, 2025

Hole selective layers (HSLs) play a crucial role in the efficiency of organic photovoltaics (OPVs). Self-assembled monolayers (SAMs) offer powerful approach to engineer interfacial properties HSLs OPVs. In this work, we utilized 2-(9H-carbazol-9-yl)ethyl)phosphonic acid (2PACz) SAM modify ITO/MoO3 interface and surface MoO3, thereby forming multilayer HSLs. 2PACz regulates work function (WF) electrodes, leading more favorable energy level alignment, reduced resistance, facilitated charge carrier transport extraction. The resulting OPV devices demonstrated improved fill factor (FF) power conversion (PCE). Additionally, reduction defects effectively suppressed recombination, ultimately achieving maximum PCE 16.33%. This indicates that design composite with modification is an effective strategy for improving provides ideas further advancing development.

Language: Английский

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Enhanced Performance of Inverted Perovskite Solar Cells with Buried Interface Modified by 1-(4-Bromophenyl)piperazine Layer

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178884 - 178884

Published: Jan. 1, 2025

Language: Английский

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Bifunctional π conjugated g-C3N4 for enhancing the efficiency and stability of carbon-based perovskite solar cells

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 362, P. 131797 - 131797

Published: Jan. 31, 2025

Language: Английский

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Analyzing Efficiency of Perovskite Solar Cells Under High Illumination Intensities by SCAPS Device Simulation

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(4), P. 286 - 286

Published: Feb. 13, 2025

The perovskite solar cell (PSC) is undergoing intense study to meet sustainable energy and environmental demands. However, large-sized cells will degrade the power conversion efficiency, thus concentrating light on small-size devices would be a solution. Here, we report performance of p-i-n structured device using CH3NH3PbI3 (MAPbI3) as active layer with an area 6 mm2. We prove that output up 4.2 mW under 10 Suns compared 0.9 obtained 1 Sun; however, this results in actual efficiency drop PSC. Further, SCAPS simulation, found intrinsic properties, such mobility defect density, MAPbI3 has no profound influence relationship between intensity (PCE), but series resistance dominant limiting factor PSC high illumination intensities. Our work suggests potential photovoltaics makes recommendations for future development.

Language: Английский

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n-Type branched shoulder-chain small molecule electron transport layer for inverted perovskite solar cells

New Journal of Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The n-type branched shoulder-chain small molecules CY3 and CY4, incorporating PCBM, are established as designed ETLs for fabricating inverted PSCs.

Language: Английский

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