Retarding solid-state reactions enable efficient and stable all-inorganic perovskite solar cells and modules DOI Creative Commons
Cheng Liu,

Xiuhong Sun,

Yi Yang

et al.

Science Advances, Journal Year: 2023, Volume and Issue: 9(21)

Published: May 26, 2023

All-inorganic CsPbI3 perovskite solar cells (PSCs) with efficiencies exceeding 20% are ideal candidates for application in large-scale tandem cells. However, there still two major obstacles hindering their scale-up: (i) the inhomogeneous solid-state synthesis process and (ii) inferior stability of photoactive black phase. Here, we have used a thermally stable ionic liquid, bis(triphenylphosphine)iminium bis(trifluoromethylsulfonyl)imide ([PPN][TFSI]), to retard high-temperature reaction between Cs4PbI6 DMAPbI3 [dimethylammonium (DMA)], which enables preparation high-quality large-area films air. Because strong Pb-O contacts, [PPN][TFSI] increases formation energy superficial vacancies prevents undesired phase degradation CsPbI3. The resulting PSCs attained power conversion efficiency (PCE) 20.64% (certified 19.69%) long-term operational over 1000 hours. A record 16.89% an all-inorganic module was achieved, active area 28.17 cm2.

Language: Английский

21.15%‐Efficiency and Stable γ ‐CsPbI3 Perovskite Solar Cells Enabled by an Acyloin Ligand DOI
Jungang Wang, Yuhang Che, Yuwei Duan

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(12)

Published: Jan. 9, 2023

Cesium lead triiodide (CsPbI3 ) is a promising light-absorbing material for constructing perovskite solar cells (PSCs) owing to its favorable bandgap and thermal tolerance. However, the high density of defects in CsPbI3 film not only act as recombination centers, but also facilitate ion migration, leading lower PCE inferior stability compared with state-of-the-art organic-inorganic hybrid PSC counterpart. Theoretical analyses suggest that effective suppression helpful improving device performance. Herein, stable efficient γ -CsPbI3 PSCs are demonstrated by developing an acyloin ligand (1,2-di(thiophen-2-yl)ethane-1,2-dione (DED)) phase stabilizer defect passivator. The experiment calculation results confirm carbonyl thienyl DED can synergistically interact forming chelate effectively passivate Pb-related further suppress migration. Consequently, DED-treated yield champion 21.15%, which one highest among all reported date. In addition, unencapsulated DED-CsPbI3 retain 94.9% itsinitial when stored under ambient conditions 1000 h 92.8% initial constant illumination 250 h.

Language: Английский

Citations

129
Recent Developments in Upscalable Printing Techniques for Perovskite Solar Cells DOI Creative Commons
Bhaskar Parida, Arjun Singh, Abdul Kareem K. Soopy

et al.

Advanced Science, Journal Year: 2022, Volume and Issue: 9(14)

Published: March 10, 2022

Abstract Just over a decade, perovskite solar cells (PSCs) have been emerged as next‐generation photovoltaic technology due to their skyrocketing power conversion efficiency (PCE), low cost, and easy manufacturing techniques compared Si cells. Several methods procedures developed fabricate high‐quality films improve the scalability commercialize PSCs. Recently, several printing technologies such blade‐coating, slot‐die coating, spray flexographic printing, gravure screen inkjet found be very effective in controlling film formation improving PCE of 21%. This review summarizes intensive research efforts given for these scale up well hole transport layer (HTL), electron (ETL), electrodes In end, this presents description future scope overcome challenges being faced commercialization

Language: Английский

Citations

96
Tailored Cysteine‐Derived Molecular Structures toward Efficient and Stable Inorganic Perovskite Solar Cells DOI
Hao Zhang, Qingwen Tian, Wanchun Xiang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(31)

Published: March 27, 2023

Abstract Surface–defect‐triggered non‐radiative charge recombination and poor stability have become the main roadblock to continued improvement in inorganic perovskite solar cells (PSCs). Herein, culprits are identified on surface by first‐principles calculations, purposefully design a brand‐new passivator, Boc‐S‐4‐methoxy‐benzyl‐l‐cysteine (BMBC), whose multiple Lewis‐based functional groups (NH, S CO) suppress halide vacancies coordinate with undercoordinated Pb 2+ through typical Lewis baseacid reactions. The tailored electron‐donating methoxyl group (CH 3 O–) can cause an increased electron density benzene ring, which strengthens interaction via electrostatic interactions. This BMBC passivation reduce trap density, enlarge grains, prolong lifetime, more suitable energy‐level alignment. In addition, hydrophobic tert‐butyl butoxycarbonyl (Boc‐) ensures that is uniformly covered prevents harmful aggregation steric repulsion at perovskite/hole–transporting layer (HTL) interface, thus providing umbrella resist moisture invasion. Consequently, combination of above increases efficiency CsPbI 3−x Br x PSC from 18.6% 21.8%, highest for this type metal PSCs so far, as far it known. Moreover, device exhibits higher environmental thermal stability.

Language: Английский

Citations

84
Perovskite phase heterojunction solar cells DOI Creative Commons
Ran Ji, Zongbao Zhang, Yvonne J. Hofstetter

et al.

Nature Energy, Journal Year: 2022, Volume and Issue: 7(12), P. 1170 - 1179

Published: Nov. 10, 2022

Abstract Modern photovoltaic devices are often based on a heterojunction structure where two components with different optoelectronic properties interfaced. The of each side the junction can be tuned by either utilizing materials (for example, donor/acceptor) or doping p–n junction) even varying their dimensionality 3D/2D). Here we demonstrate concept phase (PHJ) solar cells polymorphs same material. We approach forming γ -CsPbI 3 / β perovskite PHJ cells. find that all parameters device significantly surpass those single-phase devices, resulting in maximum power conversion efficiency 20.1%. These improvements originate from efficient passivation larger bandgap , increase built-in potential enabled energetic alignment between phases and enhanced absorption light structure. demonstrated here offers new possibilities for development polymorphic materials.

Language: Английский

Citations

83
Surface n-type band bending for stable inverted CsPbI3perovskite solar cells with over 20% efficiency DOI
Shuo Wang, Minghua Li, Yanyan Zhang

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(6), P. 2572 - 2578

Published: Jan. 1, 2023

Inverted CsPbI 3 perovskite solar cells offer merits for tandem and indoor photovoltaics.

Language: Английский

Citations

67
Mixed‐Halide Inorganic Perovskite Solar Cells: Opportunities and Challenges DOI
Ming Yang, Huaxin Wang, Wensi Cai

et al.

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(20)

Published: Aug. 23, 2023

Abstract Recently, mixed‐halide inorganic CsPbI 3− x Br perovskite solar cells (PSCs) have had a rapid advancement, which offers balanced efficiency, stability, tunable bandgap, and potential for indoor photovoltaic applications. Despite these advantages, significant challenges remain in the phase segregation phenomena, trap state density, absorption range limitations. This review presents an analysis of crystal electronic structure optical properties , as well in‐depth look at high‐quality film preparation, inhibition solutions, interface engineering, highlighting critical role modification performance PSCs. Furthermore, how PSCs can be strong candidates photovoltaics because their adjustable bandgap that enables them to better match notable strength stability is discussed. Finally, provides perspectives address development bottlenecks inspires future research prospects concerning

Language: Английский

Citations

61
In Situ Self‐Elimination of Defects via Controlled Perovskite Crystallization Dynamics for High‐Performance Solar Cells DOI
Shiqiang Wang, Tinghuan Yang, Yingguo Yang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(42)

Published: Aug. 31, 2023

Understanding and controlling crystallization is crucial for high-quality perovskite films efficient solar cells. Herein, the issue of defects in formamidinium lead iodide (FAPbI3 ) formation addressed, focusing on role intermediates. A comprehensive picture structural carrier evolution during demonstrated using situ grazing-incidence wide-angle X-ray scattering, ultraviolet-visible spectroscopy photoluminescence spectroscopy. Three stages are identified: precursors to δ-FAPbI3 intermediate, then α-FAPbI3 , where spontaneously emerge. hydrogen-sulfate-based ionic liquid additive found enable phase-conversion pathway → solvated intermediates which spontaneous generation can be effectively circumvented. This extends initial growth kinetics facilitates solvent-FA+ ion exchange, results self-elimination crystallization. Therefore, improved dynamics larger grain sizes fewer within thin films. Ultimately, high-performance cells, achieving impressive efficiencies 25.14% at 300 K 26.12% 240 K. breakthrough might open up a new era application emerging photovoltaic technology low-temperature environments such as near-space polar regions.

Language: Английский

Citations

59
Bioresource Upgrade for Sustainable Energy, Environment, and Biomedicine DOI Creative Commons
Fanghua Li, Yiwei Li, Kostya S. Novoselov

et al.

Nano-Micro Letters, Journal Year: 2023, Volume and Issue: 15(1)

Published: Jan. 11, 2023

We conceptualize bioresource upgrade for sustainable energy, environment, and biomedicine with a focus on circular economy, sustainability, carbon neutrality using high availability low utilization biomass (HALUB). acme energy-efficient technologies energy material recovery applications. The of thermochemical conversion (TC), biochemical (BC), electrochemical (EC), photochemical (PTC) are summarized HALUB. Microalgal could contribute to biofuel HHV 35.72 MJ Kg

Language: Английский

Citations

54
Managing Multiple Halide‐Related Defects for Efficient and Stable Inorganic Perovskite Solar Cells DOI
Zhiteng Wang, Qingwen Tian,

Hao Zhang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(30)

Published: May 25, 2023

Abstract Halide‐related surface defects on inorganic halide perovskite not only induce charge recombination but also severely limit the long‐term stability of solar cells. Herein, adopting density functional theory calculation, we verify that iodine interstitials (I i ) has a low formation energy similar to vacancy (V I and is readily formed all‐inorganic perovskite, it regarded function as an electron trap. We screen specific 2,6‐diaminopyridine (2,6‐DAPy) passivator, which, with aid combined effects from halogen‐N pyridine coordination bonds, successfully eliminates dissociative 2 passivates abundant V . Furthermore, two symmetric neighboring ‐NH groups interact adjacent halides octahedral cluster by forming hydrogen which further promotes adsorption 2,6‐DAPy molecules onto surface. Such synergetic can significantly passivate harmful iodine‐related undercoordinated Pb 2+ , prolong carrier lifetimes facilitate interfacial hole transfer. Consequently, these merits enhance power‐conversion efficiency (PCE) 19.6 % 21.8 %, highest value for this type cells, just importantly, 2,6‐DAPy‐treated CsPbI 3− x Br films show better environmental stability.

Language: Английский

Citations

51
All–Inorganic Perovskite Solar Cells: Defect Regulation and Emerging Applications in Extreme Environments DOI
Cong Shen, Tengling Ye, Peixia Yang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: March 11, 2024

Abstract All–inorganic perovskite solar cells (PSCs), such as CsPbX 3 , have garnered considerable attention recently, they exhibit superior thermodynamic and optoelectronic stabilities compared to the organic–inorganic hybrid PSCs. However, power conversion efficiency (PCE) of PSCs is generally lower than that PSCs, contain higher defect densities at interface within light‐absorbing layers, resulting in non‐radiative recombination voltage loss. Consequently, regulation has been adopted an important strategy improve device performance stability. This review aims comprehensively summarize recent progresses on well their cutting‐edge applications extreme scenarios. The underlying fundamental mechanisms leading formation crystal structure are firstly discussed, overview literature‐adopted strategies context interface, internal, surface engineering provided. Cutting‐edge environments outer space underwater situations highlighted. Finally, a summary outlook presented future directions for achieving efficiencies stability

Language: Английский

Citations

36