Surface reaction for efficient and stable inverted perovskite solar cells

Nature, Год журнала: 2022, Номер 611(7935), С. 278 - 283

Опубликована: Сен. 1, 2022

Язык: Английский

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Minimizing buried interfacial defects for efficient inverted perovskite solar cells

Science, Год журнала: 2023, Номер 380(6643), С. 404 - 409

Опубликована: Апрель 27, 2023

Controlling the perovskite morphology and defects at buried perovskite-substrate interface is challenging for inverted solar cells. In this work, we report an amphiphilic molecular hole transporter, (2-(4-(bis(4-methoxyphenyl)amino)phenyl)-1-cyanovinyl)phosphonic acid, that features a multifunctional cyanovinyl phosphonic acid group forms superwetting underlayer deposition, which enables high-quality films with minimized interface. The resulting film has photoluminescence quantum yield of 17% Shockley-Read-Hall lifetime nearly 7 microseconds achieved certified power conversion efficiency (PCE) 25.4% open-circuit voltage 1.21 volts fill factor 84.7%. addition, 1-square centimeter cells 10-square minimodules show PCEs 23.4 22.0%, respectively. Encapsulated modules exhibited high stability under both operational damp heat test conditions.

Язык: Английский

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Rational design of Lewis base molecules for stable and efficient inverted perovskite solar cells

Science, Год журнала: 2023, Номер 379(6633), С. 690 - 694

Опубликована: Фев. 16, 2023

Lewis base molecules that bind undercoordinated lead atoms at interfaces and grain boundaries (GBs) are known to enhance the durability of metal halide perovskite solar cells (PSCs). Using density functional theory calculations, we found phosphine-containing have strongest binding energy among members a library studied herein. Experimentally, best inverted PSC treated with 1,3-bis(diphenylphosphino)propane (DPPP), diphosphine passivates, binds, bridges GBs, retained power conversion efficiency (PCE) slightly higher than its initial PCE ~23% after continuous operation under simulated AM1.5 illumination maximum point ~40°C for >3500 hours. DPPP-treated devices showed similar increase in being kept open-circuit conditions 85°C >1500

Язык: Английский

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Regulating surface potential maximizes voltage in all-perovskite tandems

Nature, Год журнала: 2022, Номер 613(7945), С. 676 - 681

Опубликована: Ноя. 15, 2022

Язык: Английский

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Reducing nonradiative recombination in perovskite solar cells with a porous insulator contact

Science, Год журнала: 2023, Номер 379(6633), С. 683 - 690

Опубликована: Фев. 16, 2023

Inserting an ultrathin low-conductivity interlayer between the absorber and transport layer has emerged as important strategy for reducing surface recombination in best perovskite solar cells. However, a challenge with this approach is trade-off open-circuit voltage (Voc) fill factor (FF). Here, we overcame by introducing thick (about 100 nanometers) insulator random nanoscale openings. We performed drift-diffusion simulations cells porous contact (PIC) realized it using solution process controlling growth mode of alumina nanoplates. Leveraging PIC approximately 25% reduced area, achieved efficiency up to 25.5% (certified steady-state 24.7%) p-i-n devices. The product Voc × FF was 87.9% Shockley-Queisser limit. velocity at p-type from 64.2 9.2 centimeters per second. bulk lifetime increased 1.2 6.0 microseconds because improvements crystallinity. improved wettability precursor allowed us demonstrate 23.3% efficient 1-square-centimeter cell. here its broad applicability different contacts compositions.

Язык: Английский

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Highly efficient p-i-n perovskite solar cells that endure temperature variations

Science, Год журнала: 2023, Номер 379(6630), С. 399 - 403

Опубликована: Янв. 26, 2023

Daily temperature variations induce phase transitions and lattice strains in halide perovskites, challenging their stability solar cells. We stabilized the perovskite black improved cell performance using ordered dipolar structure of β-poly(1,1-difluoroethylene) to control film crystallization energy alignment. demonstrated p-i-n cells with a record power conversion efficiency 24.6% over 18 square millimeters 23.1% 1 centimeter, which retained 96 88% after 1000 hours 1-sun maximum point tracking at 25° 75°C, respectively. Devices under rapid thermal cycling between -60° +80°C showed no sign fatigue, demonstrating impact on operational

Язык: Английский

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Stabilized hole-selective layer for high-performance inverted p-i-n perovskite solar cells

Science, Год журнала: 2023, Номер 382(6668), С. 284 - 289

Опубликована: Окт. 19, 2023

P-i-n geometry perovskite solar cells (PSCs) offer simplified fabrication, greater amenability to charge extraction layers, and low-temperature processing over n-i-p counterparts. Self-assembled monolayers (SAMs) can enhance the performance of p-i-n PSCs but ultrathin SAMs be thermally unstable. We report a robust hole-selective layer comprised nickel oxide (NiOx) nanoparticle film with surface-anchored (4-(3,11-dimethoxy-7H-dibenzo[c,g]carbazol-7-yl)butyl)phosphonic acid (MeO-4PADBC) SAM that improve stabilize NiOx/perovskite interface. The energetic alignment favorable contact binding between NiOx/MeO-4PADBC reduced voltage deficit various compositions led strong interface toughening effects under thermal stress. resulting 1.53-electron-volt devices achieved 25.6% certified power conversion efficiency maintained >90% their initial after continuously operating at 65 degrees Celsius for 1200 hours 1-sun illumination.

Язык: Английский

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Bimolecularly passivated interface enables efficient and stable inverted perovskite solar cells

Science, Год журнала: 2023, Номер 382(6672), С. 810 - 815

Опубликована: Ноя. 16, 2023

Compared with the n-i-p structure, inverted (p-i-n) perovskite solar cells (PSCs) promise increased operating stability, but these photovoltaic often exhibit lower power conversion efficiencies (PCEs) because of nonradiative recombination losses, particularly at perovskite/C60 interface. We passivated surface defects and enabled reflection minority carriers from interface into bulk using two types functional molecules. used sulfur-modified methylthio molecules to passivate suppress through strong coordination hydrogen bonding, along diammonium repel reduce contact-induced achieved field-effect passivation. This approach led a fivefold longer carrier lifetime one-third photoluminescence quantum yield loss certified quasi-steady-state PCE 25.1% for PSCs stable operation 65°C >2000 hours in ambient air. also fabricated monolithic all-perovskite tandem 28.1% PCE.

Язык: Английский

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Long-term operating stability in perovskite photovoltaics

Nature Reviews Materials, Год журнала: 2023, Номер 8(9), С. 569 - 586

Опубликована: Авг. 4, 2023

Язык: Английский

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Homogenized NiO _x nanoparticles for improved hole transport in inverted perovskite solar cells

Science, Год журнала: 2023, Номер 382(6677), С. 1399 - 1404

Опубликована: Ноя. 23, 2023

The power conversion efficiency (PCE) of inverted perovskite solar cells (PSCs) is still lagging behind that conventional PSCs, in part because inefficient carrier transport and poor morphology hole layers (HTLs). We optimized self-assembly [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz) onto nickel oxide (NiOx) nanoparticles as an HTL through treatment with hydrogen peroxide, which created a more uniform dispersion high conductivity attributed to the formation Ni3+ well surface hydroxyl groups for bonding. A 25.2% certified PCE mask size 0.074 square centimeters was obtained. This device maintained 85.4% initial after 1000 hours stabilized output operation under 1 sun light irradiation at about 50°C 85.1% 500 accelerated aging 85°C. obtained 21.0% minimodule aperture area 14.65 centimeters.

Язык: Английский

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