Advances in mixed 2D and 3D perovskite heterostructure solar cells: A comprehensive review

Nano Energy, Journal Year: 2023, Volume and Issue: 118, P. 108979 - 108979

Published: Oct. 10, 2023

Language: Английский

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Structurally Dimensional Engineering in Perovskite Photovoltaics

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(23)

Published: May 4, 2023

Abstract The low‐dimensional (LD) perovskites are proven to be capable of blocking moisture erosion and thereby improving the photovoltaic device stability. In this review, perovskite materials carefully summarized that induced by A‐position organic substituents, starting from crystal microstructure electronic structure LD (2D, 1D, 0D) with regulating dimensions, combined first principles calculation (DFT). By further studying thermodynamics dynamics crystallization nucleation growth LD–3D thin films in heterojunction region, solar cells controllable dimensions can situ prepared. Various devices systematically summarized, which shows flexible regulation energy band carrier transport characteristics, locks water oxygen corrosion channel close‐fitting conjugated structure, improves long‐term stability cells. This review is expected provide some guidance for development multipurpose use through depth understanding structurally dimensional engineering photovoltaics.

Language: Английский

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Two‐Step Perovskite Solar Cells with > 25% Efficiency: Unveiling the Hidden Bottom Surface of Perovskite Layer

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: April 11, 2024

Abstract While significant efforts in surface engineering have been devoted to the conversion process of lead iodide (PbI 2 ) into perovskite and top layer with remarkable progress, exploration residual PbI clusters hidden bottom on limited. In this work, a new strategy involving 1‐butyl‐3‐methylimidazolium acetate (BMIMAc) ionic liquid (IL) additives is developed it found that both cations anions ILs can interact components, thereby regulating crystallization diminishing residue as well filling vacancies. The introduction BMIMAc induces formation uniform porous film, facilitating better penetration second‐step organic salt fostering more extensive interaction between salt. Surprisingly, oversized at completely diminish. addition, advanced depth analysis techniques including depth‐resolved grazing‐incidence wide‐angle X‐ray scattering (GIWAXS) thinning technology are employed for comprehensive understanding reduction . Leveraging effective management regulation process, champion devices achieve power efficiency (PCE) 25.06% long‐term stability.

Language: Английский

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Compatible Soft‐Templated Deposition and Surface Molecular Bridge Construction of SnO₂ Enable Air‐Fabricated Perovskite Solar Cells with Efficiency Exceeding 25.7%

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(23)

Published: March 26, 2024

Abstract Metal‐halide perovskite solar cells (PSCs) have emerged as a promising photovoltaic technology. Fabricating PSCs in ambient air can accelerate their low‐cost commercialization, since it remove the reliance on atmosphere‐controlled equipment. However, power conversion efficiency (PCE) of air‐fabricated still lags behind those fabricated glovebox. Here, based technology to fabricate high‐quality film air, compatible optimization is performed electron transport layer (ETL) further enhance performance PSCs. A soft‐templated deposition strategy proposed that utilizes tetrasodium glutamate diacetate (GLDA) finely regulate chemical bath process, leading an ideal SnO 2 ETL with no additive residual. Adopting this feature residual, molecular bridge using β‐guanidinopropionic acid (βA) constructed at buried interface (SnO /perovskite), which effectively enhances extraction and decreases losses. The resulting (0.08 cm ) achieve impressive PCE 25.74% (certificated 25.43%), highest among reported date. 24.61% 1 ‐PSCs also obtained, exhibiting scalable potential In addition, excellent operational stability these demonstrated.

Language: Английский

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Tuning 2D Perovskite Passivation: Impact of Electronic and Steric Effects on the Performance of 3D/2D Perovskite Solar Cells

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(45)

Published: Oct. 3, 2023

Abstract Surface passivation with 2D perovskites is a powerful strategy to achieve improved stability and performance in perovskite solar cells (PSCs). Various large organic cations have been successfully implemented, led by phenylethylammonium ( PEA + ) its derivatives. However, systematic studies on sets of understand the effect substituent position device are lacking. Herein, collection halogenated iodide salts x ‐XPEAI where : ortho o ), meta m , para p X F, Cl, Br) synthesized facile method deposited top 3D perovskite. The layer formation confirmed X‐ray diffraction (XRD) grazing‐incidence wide‐angle scattering analyses for all cations, regardless nature halogen. Density functional theory analysis reveals that lower energies higher interfacial dipoles achieved ‐substituted responsible enhanced compared their ‐ counterparts. While ‐BrPEAI ‐treated shows champion efficiency 23.42%, V OC =1.13 V, FF=81.2%), considering average efficiencies, stability, reproducibility, treatment ‐ClPEAI salt yields best overall performance. This comprehensive study provides guidelines understanding influence cation modification 3D/2D PSCs.

Language: Английский

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Dielectric Engineering of 2D Organic–Inorganic Hybrid Perovskites

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 9(1), P. 226 - 242

Published: Dec. 22, 2023

Manipulating excitons in semiconductors has driven the evolution of today's optoelectronic and photovoltaic devices. Engineering dielectric constant, a key parameter that is highly associated with Coulomb force excitons, recently emerged as fresh avenue to regulate from root. Unlike three-dimensional (3D) bulk featuring uniformly distributed constants, constants two-dimensional (2D) layered exhibit spatial variability. Particularly, organic–inorganic hybrid perovskites (OIHPs) assembled alternating organic inorganic layers show cyclic variation property, which substantially impacts exciton dynamics, including recombination separation, offering an opportunity for regulation exciton-related physical attributes by engineering cutting-edge applications thereof. This Review documents recent advances rational design constituents 2D OIHPs engineering. We dielectrically engineered are pivotal driving advancements optoelectrical applications.

Language: Английский

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Fluorinated Quasi 2D Perovskite Solar Cells with Improved Stability and Over 19% Efficiency

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(22)

Published: March 10, 2024

Abstract 2D Ruddlesden–Popper perovskites (RPP) with excellent environmental and structural stability are emerging photovoltaic materials. Here, a benzylamine‐based spacer, namely 3,5‐difluorobenzylamine (DF‐BZA), is developed for stable efficient quasi‐2D‐RP perovskite solar cells (PSCs). Compared to benzylamine (BZA)‐based quasi‐2D RPP, the DF‐BZA‐based film exhibited superior quality significantly enlarged grain size improved charge carrier lifetime owing fluorine atoms in DF‐BZA. As result, optimized (DF‐BZA) 2 FA 3 Pb 4 I 13 PSCs achieve power conversion efficiency (PCE) of 19.24%, while BZA‐based ((BZA) ) only PCE 17.04%. This represents champion using as A‐site cation RPPs n = 4. Moreover, due effective insertion fluorinated spacers into inorganic layers, moisture resistance 85 °C thermal improved. The improvement performance highlight great potential spacer high‐performance RP PSCs.

Language: Английский

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Defect Passivation Scheme toward High-Performance Halide Perovskite Solar Cells

Polymers, Journal Year: 2023, Volume and Issue: 15(9), P. 2010 - 2010

Published: April 24, 2023

Organic-inorganic halide perovskite solar cells (PSCs) have attracted much attention in recent years due to their simple manufacturing process, low cost, and high efficiency. So far, all efficient organic-inorganic PSCs are mainly made of polycrystalline films. There transmission barriers high-density defects on the surface, interface, grain boundary Among them, deep-level traps caused by specific charged main non-radiative recombination centers, which is most important factor limiting photoelectric conversion efficiency devices Shockley-Queisser (S-Q) theoretical limit. Therefore, it imperative select appropriate passivation materials strategies effectively eliminate films improve photovoltaic performance stability. various for different components PSCs, including interface engineering, additive antisolvent dopant etc. In this review, we summarize a large number defect work illustrate latest progress types passivators regulating morphology, boundary, size, charge recombination, density states addition, discuss inherent key carrier transporting layers corresponding further optimize components. Finally, some perspectives opportunities challenges future development highlighted.

Language: Английский

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High‐Performance Inverted Perovskite Solar Cells by Dual Interfaces Modification with Identical Organic Salt

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: May 22, 2024

Abstract The improvement of power conversion efficiency (PCE) and stability perovskite solar cells (PSC) relies on the enhanced quality layer modification its adjacent interfaces. For this purpose, a multifunctional organic passivation molecule 1‐(4‐Fluorophenyl) biguanide hydrochloride (F‐BHCl) is introduced to top bottom interfaces layer. PCE PSC after double with F‐BHCl significantly increased from 22.41% (unmodified) 25.14%, storage, thermal, operation also improved. comprehensive theoretical experimental studies verify that due versatile functional groups adaptation, can improve film, fully passivate several kinds common defects, smoothen surfaces construct “molecular bridges” carrier transporters both surfaces, leading reduced non‐recombination transport losses. As result, significant increase achieved in open circuit voltage fill factor as well whole performance device.

Language: Английский

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Dual‐Site Molecular Dipole Enables Tunable Interfacial Field Toward Efficient and Stable Perovskite Solar Cells

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

Published: Sept. 5, 2024

Abstract The interfacial management in perovskite solar cells (PSCs), including mitigating the carrier transport barrier and suppressing non‐radiative recombination, still remains a significant challenge for efficiency stability enhancement. Herein, by screening family of fluorine (F) terminated dual‐site organic dipole molecules, study aims to gain insight into molecular array toward tunable field. Both experimental theoretical results reveal that these functional molecules can effectively anchor on surface through Lewis acid‐base interaction. In addition, tailored side‐chain with F atoms allows altering constructing well matched perovskite/Spiro‐OMeTAD contact. As result, inserting modulates interface deliver gradient energy level alignment, facilitating extraction transport. optimal trifluoro‐methanesulfonamide mediated N‐i‐P PSCs achieve highest 25.47%, together enhanced operational under 1000 h simulated 1‐sun illumination exposure. These findings are believed provide design sufficient tunability perovskite‐based optoelectronic devices.

Language: Английский

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