Moisture‐Resilient Perovskite Solar Cells for Enhanced Stability

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(12)

Published: April 19, 2023

Abstract With the rapid rise in device performance of perovskite solar cells (PSCs), overcoming instabilities under outdoor operating conditions has become most crucial obstacle toward their commercialization. Among stressors such as light, heat, voltage bias, and moisture, latter is arguably critical, it can decompose metal‐halide (MHP) photoactive absorbers instantly through its hygroscopic components (organic cations metal halides). In addition, charge transport layers (CTLs) commonly employed PSCs also degrade presence water. Furthermore, photovoltaic module fabrication encompasses several steps, laser processing, subcell interconnection, encapsulation, during which are exposed to ambient atmosphere. Therefore, a first step long‐term stable photovoltaics, vital engineer materials maximizing moisture resilience, be accomplished by passivating bulk MHP film, introducing passivation interlayers at top contact, exploiting hydrophobic CTLs, encapsulating finished devices with barrier layers, without jeopardizing performance. Here, existing strategies for enhancing stability reviewed pathways moisture‐resilient commercial formulated.

Language: Английский

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Fully Aromatic Self‐Assembled Hole‐Selective Layer toward Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with Ultraviolet Resistance

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 63(1)

Published: Nov. 21, 2023

Abstract Ultraviolet‐induced degradation has emerged as a critical stability concern impeding the widespread adoption of perovskite solar cells (PSCs), particularly in context phase‐unstable wide‐band gap films. This study introduces novel approach by employing fully aromatic carbazole‐based self‐assembled monolayer, denoted (4‐(3,6‐dimethoxy‐9H‐carbazol‐9‐yl)phenyl)phosphonic acid (MeO‐PhPACz), hole‐selective layer (HSL) inverted PSCs. Incorporating conjugated linker plays pivotal role promoting formation dense and highly ordered HSL on substrates, facilitating subsequent interfacial interactions, fostering growth uniform The high‐quality film could effectively suppress non‐radiative recombination, improving hole extraction/transport efficiency. Through these advancements, optimized PSCs, featuring band 1.68 eV, attain an impressive power conversion efficiency (PCE) 21.10 %. Remarkably, MeO‐PhPACz demonstrates inherent UV resistance heightened absorption capabilities, substantially for targeted characteristic holds significance feasibility large‐scale outdoor applications.

Language: Английский

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Highly efficient bifacial single-junction perovskite solar cells

Joule, Journal Year: 2023, Volume and Issue: 7(7), P. 1543 - 1555

Published: June 29, 2023

Language: Английский

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Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(12), P. 5992 - 6002

Published: Jan. 1, 2023

A simple and straightforward interface engineering strategy, using stacked layers of small molecules (2PACz/Me-4PACz) as hole-selective layers, resulted in the formation a dense buried perovskite film.

Language: Английский

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Narrow Bandgap Metal Halide Perovskites for All-Perovskite Tandem Photovoltaics

Chemical Reviews, Journal Year: 2024, Volume and Issue: 124(7), P. 4079 - 4123

Published: March 25, 2024

All-perovskite tandem solar cells are attracting considerable interest in photovoltaics research, owing to their potential surpass the theoretical efficiency limit of single-junction cells, a cost-effective sustainable manner. Thanks bandgap-bowing effect, mixed tin-lead (Sn-Pb) perovskites possess close ideal narrow bandgap for constructing matched with wide-bandgap neat lead-based counterparts. The performance all-perovskite tandems, however, has yet reach its potential. One main obstacles that need be overcome is the─oftentimes─low quality Sn-Pb perovskite films, largely caused by facile oxidation Sn(II) Sn(IV), as well difficult-to-control film crystallization dynamics. Additional detrimental imperfections introduced thin film, particularly at vulnerable surfaces, including top and bottom interfaces grain boundaries. Due these issues, resultant device distinctly far lower than theoretically achievable maximum efficiency. Robust modifications improvements surfaces films therefore critical advancement field. This Review describes origins covers efforts made so toward reaching better understanding perovskites, particular respect surface improved stability cells. In addition, we also outline important issues integrating subcells achieving reliable efficient double- multi-junction tandems. Future work should focus on characterization visualization specific defects, tracking evolution under different external stimuli, guiding turn processing stable cell devices.

Language: Английский

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Dipolar Chemical Bridge Induced CsPbI₃ Perovskite Solar Cells with 21.86 % Efficiency

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(18)

Published: March 4, 2024

Abstract CsPbI 3 perovskite receives tremendous attention for photovoltaic applications due to its ideal band gap and good thermal stability. However, solar cells (PSCs) significantly suffer from photovoltage deficits because of serious interfacial energy losses within the PSCs, which a large extent affects performance PSCs. Herein, dipolar chemical bridge (DCB) is constructed between TiO 2 layers lower thus improve charge extraction The results reveal that DCB could form beneficial dipole layers, optimize energetics perovskite/TiO level alignment Meanwhile, also simultaneously passivate surface defects greatly lowering recombination. Consequently, deficit PSCs largely reduced, leading record efficiency 21.86 % being realized. operation stability improved high‐quality films with released tensile strain obtained after forming

Language: Английский

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Tailoring Multifunctional Self‐Assembled Hole Transporting Molecules for Highly Efficient and Stable Inverted Perovskite Solar Cells

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(10)

Published: Jan. 29, 2023

Abstract The self‐assembled hole transporting molecules (SAHTMs) bearing anchoring groups have been established as the layers (HTLs) for highly efficient p–i–n perovskite solar cells (PSCs), yet their stability and engineering at molecular level remain challenging. A topological design of anisotropic aligned SAHTM‐based HTLs operationally stable PSCs that exhibit exceptional solar‐to‐electric power conversion efficiencies (PCEs) is demonstrated. judiciously designed multifunctional comprise donor–acceptor subunit phosphonic acid group anchoring, realizing face‐on π‐stacking parallel to transparent conductive oxide substrate. high affinity SAHTMs multi‐crystalline thin film benefits passivating buried interface, strengthening interfacial contact while facilitating transfer. Consequently, PSC devices are obtained with a champion PCE 23.24% outstanding operational toward various environmental factors including long‐term full sunlight soaking evaluated temperatures. Perovskite modules efficiency approaching 20% also fabricated an active device area above 17 cm 2 .

Language: Английский

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Defect‐Passivating and Stable Benzothiophene‐Based Self‐Assembled Monolayer for High‐Performance Inverted Perovskite Solar Cells

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(12)

Published: Jan. 12, 2024

Abstract Effective passivation of defects at the buried interface between perovskite absorber and hole‐selective layer (HSL) is crucial for achieving high performance in inverted solar cells (PSCs). Additionally, HSL needs to possess compact molecular packing intrinsic photo‐ thermo‐stability ensure long‐term operation devices. In this study, a novel MeO‐BTBT‐based self‐assembled monolayer (SAM) reported serve as an efficient PSCs. Compared well‐established carbazole‐containing SAM MeO‐2PACz, MeO‐BTBT has flat more extended conjugation with large atomic radius sulfur atom. These induce stronger intermolecular interactions enable ordered be formed on indium–tin oxide (ITO) substrates. Meanwhile, atoms can coordinate Pb 2+ ions passivate absorber. The derived films show both photoluminescence (PL) quantum yield (13.2%) long lifetime (7.2 µs). PSCs based PCE 24.53% impressive fill factor 85.3%. PCEs devices maintain ≈95% their initial values after being aged 65 °C than 1000 h or continuous under 1‐sun illumination.

Language: Английский

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The Dual Use of SAM Molecules for Efficient and Stable Perovskite Solar Cells

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

Published: April 18, 2024

Abstract Perovskite solar cells (PSCs) hold significant promise as the next‐generation materials in photovoltaic markets, owing to their ability achieve impressive power conversion efficiencies, streamlined fabrication processes, cost‐effective manufacturing, and numerous other advantages. The utilization of self‐assembled monolayer (SAM) molecules has proven be a success enhancing device efficiency extending stability. This review highlights dual use SAM realm PSCs, which can not only serve charge transport but also act interfacial modulators. These research endeavors encompass wide range applications for various both n‐i‐p p‐i‐n structured providing deep insight into underlying mechanisms. Furthermore, this proposes current challenges future investigations materials. timely thorough seeks provide direction inspiration efforts dedicated ongoing incorporation SAMs field perovskite photovoltaics.

Language: Английский

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Self‐assembled monolayers (SAMs) in inverted perovskite solar cells and their tandem photovoltaics application

Interdisciplinary materials, Journal Year: 2024, Volume and Issue: 3(2), P. 203 - 244

Published: Feb. 23, 2024

Abstract Self‐assembled monolayers (SAMs) employed in inverted perovskite solar cells (PSCs) have achieved groundbreaking progress device efficiency and stability for both single‐junction tandem configurations, owing to their distinctive versatile ability manipulate chemical physical interface properties. In this regard, we present a comprehensive review of recent research advancements concerning SAMs cells, where the prevailing challenges future development prospects applications are emphasized. We thoroughly examine mechanistic roles diverse energy‐level regulation, modification, defect passivation, charge transportation. This is by understanding how interfacial molecular interactions can be finely tuned mitigate recombination losses PSCs. Through review, aim provide valuable insights references further investigation utilization cells.

Language: Английский

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