Centimeter-scale fullerene-free tin-based perovskite solar cells achieving over 14% efficiency DOI Creative Commons
Jia Liang, Tianpeng Li,

Feifei He

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Abstract Fullerene-based materials have traditionally served as the primary electron transport layers (ETLs) in environmentally friendly tin-based perovskite solar cells (TPSCs) due to their suitable band structures. However, they suffer from limitations such high cost, complex synthetic process, low mobilities, limited interactions with Sn-based perovskites, and challenges tuning chemical electrical structures, which hindered further improvements power conversion efficiency (PCE) of TPSCs. To tackle these issues, we propose a fullerene-free TPSC architecture introduce series low-cost non-fullerene materials, i.e. fluorinated triple-acceptor polymers (named P1, P2, P3), alternative ETLs. Compared fullerene-based ETL, indene-C60 bisadduct (ICBA), ETLs exhibit facile three orders magnitude higher structural flexibility. Additionally, form continuous conformal interfaces layers, enabling stronger more uniform over large-area layers. In 1-cm2 TPSCs, particularly those using P3 achieve remarkable PCE 14.39%, surpassing 10.61% observed TPSCs ICBA ETL. Notably, ETL achieved record 16.06% for small area 0.04-cm2 (certified at 15.90%). Furthermore, demonstrates exceptional stability, showing no significant degradation 1200 hours shelf storage maintaining nearly 86% its initial after 550 h maximum point tracking under 1-sun illumination. This enhanced stability is attributed robust hydrophobicity conferred by long alkyl side chains. Overall, this study substantiates substantial potential advancing both photovoltaic performance

Language: Английский

Device Performance of Emerging Photovoltaic Materials (Version 5) DOI Creative Commons
Osbel Almora, Guillermo C. Bazan, Carlos I. Cabrera

et al.

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

Published: Nov. 26, 2024

Abstract This 5th annual “ Emerging PV Report” highlights the latest advancements in performance of emerging photovoltaic (e‐PV) devices across various e‐PV research areas, as documented peer‐reviewed articles published since August 2023. Updated graphs, tables, and analyses are provided, showcasing several key parameters, including power conversion efficiency, open‐circuit voltage, short‐circuit current, fill factor, light utilization stability test energy yield. These parameters presented functions bandgap average visible transmittance for each technology application contextualized using benchmarks such detailed balance efficiency limit.

Language: Английский

Citations

5
Exceeding 15% Performance with Energy Level Tuning in Tin-Based Perovskite Solar Cells DOI
Liang Wang, Hua̅n Bì, Jiaqi Liu

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 6238 - 6244

Published: Dec. 5, 2024

Less-toxic tin-based perovskite materials have received more attention because they are a potential alternative to toxic Pb-based materials. However, the device performance of Sn-based solar cells is still far behind that their counterparts. In addition easy oxidation Sn2+ and fast crystallization, energy level mismatch other important factor inhibiting improvement performance. study, we synthesized new material, 5-mercapto-1-methyltetrazole tin salt, SnT2, as regulator perovskites. The results show deeper valence bands conduction were detected after SnT2 addition, which can give better alignment. Furthermore, introduction also achieved reduction trap densities enlargement grain size films. Consequently, 15.33% was realized with an open-circuit voltage 842.6 mV, short-circuit current density 24.72 mA cm–2, fill 0.736.

Language: Английский

Citations

5
Reducing p-Doping of Tin Halide Perovskites by Trivalent Cation Doping DOI
Luca Gregori,

Chiara Frasca,

Daniele Meggiolaro

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(6), P. 3036 - 3041

Published: May 30, 2024

We investigate trivalent doping of tin halide perovskites as a means to decrease p-doping and control defect activity. Through density functional theory calculations experimental characterization, we demonstrate that with scandium, lanthanum, cerium successfully accomplishes Fermi level upshift, reducing background carrier concentration densities, thereby improving material performance. Solar cell fabrication testing highlight the efficacy, lanthanum delivering increased photocurrent open circuit voltage compared devices, despite being nonoptimized. This research underscores potential cation in enhancing functionality p-doped for advanced optoelectronic applications.

Language: Английский

Citations

4
Quantifying the Effect of Interfacial Dipoles on the Energy Level Alignment of Metal-Halide Perovskites DOI
Luca Gregori, Daniele Meggiolaro, Filippo De Angelis

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(11), P. 5329 - 5333

Published: Oct. 10, 2024

Surface passivation with suitable organic molecules has emerged as an effective strategy to reduce surface defects and improve the device efficiency. Adsorption of on a metal-halide perovskite (MHP) surface, however, implies electrostatic charge transfer interactions, which may alter energy levels underneath. Here, we elucidate effects differently functionalized anilines, prototypical passivating molecule, electronic methylammonium lead iodide by DFT calculations. While nature surface-passivating undoubtedly affects dipole moment, argue that adsorption geometry extent coverage play equally important roles in influencing level alignment interface extraction layers.

Language: Английский

Citations

4
Inorganic CsSnI3 Perovskite Solar Cells with an Efficiency above 13.6% DOI
Haixuan Yu, Zhiguo Zhang, Hongliang Dong

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: unknown, P. 5870 - 5878

Published: Nov. 14, 2024

Due to the high Lewis acidity of Sn2+, it is a major challenge prepare high-quality CsSnI3 films. To solve this critical problem, here we propose pseudohalide anion alloying process regulate crystallization inorganic perovskite and achieve large grain sizes in micron range. The introduction changes phase transition pathways through formation intermediates, thereby slowing rate crystallization. substitutional HCOO– crystal lattice further improves oxidation resistance Sn2+ due strong bonding between anions cations. fabricated CsSnI3-based planar solar cell with an inverted configuration active area 4.05 mm2 exhibits certified power conversion efficiency 13.68% at AM 1.5 irradiation (100 mW cm–2), which among best reported for cells.

Language: Английский

Citations

4
Optimizing the Hole-Transport Layer with Ammonium Thiocyanate for Enhanced Performance in Lead-Free Perovskite Light-Emitting Diodes DOI

Li Li,

Jiaying Xu, Jing Liu

et al.

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

Published: Jan. 7, 2025

Tin-based perovskite materials are arising as promising contenders for high-efficiency pure-red light-emitting diodes. However, the primary limitation to external quantum efficiency (EQE) of tin-based diodes (Sn-PeLEDs) stems from rapid crystallization processes and adverse P-type self-doping effects. In this study, we have effectively controlled speed perovskites through rational interfacial engineering improved stability tin halide film. We utilized ammonium thiocyanate (NH4SCN) alter properties hole-transport layer, which consists poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). Thiocyanate ions (SCN–) can form interactions with Sn–I frameworks. This not only slows rate but also suppresses oxidation Sn2+, enhancing its passivating defects associated undercoordinated Sn2+. results in smooth, uniform, compact thin films that eliminate Sn4+ within resulting film, leading enhanced radiative recombination. Sn-PeLEDs devices achieving a peak EQE 5.8%, approximately 4.6-fold higher than control device. Additionally, Commission Internationale de L'Eclairage (CIE) coordinates (0.69, 0.31) demonstrate close conformity National Television System Committee (NTSC) standardized red standard, indicating high degree color fidelity.

Language: Английский

Citations

0
Decoupling Nucleation and Growth of Crystal for DMSO‐Free Self‐Assembly Tin Perovskite Films and Their Optoelectronic Application DOI Open Access
He Dong, Rui Huang, Weiyin Gao

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Tin (Sn)‐based perovskites show significant potential in lead‐free perovskite optoelectronics. Currently, the spin‐coating method combining DMSO co‐solvent and antisolvent‐dropping has been adopted to produce Sn‐based films. However, intrinsically oxidizes Sn 2+ while fast causes serious coupling between crystal nucleation growth, leading easy formation of defects poor stability Herein, hydrazine acetate (HAAc) ionic salt, possessing strong coordination ability with , is developed stabilize decouple crystallization by promoting pre‐formed crystals (PFCs) precursor solution enabling self‐assembly PFCs during spin‐coating. The HA x FA 1‐x SnI 3 films fabricated this technique tunable bandgap, low defect density, oriented crystals, producing optoelectronic devices decent photovoltaic electroluminescence performance. DMSO‐free one‐step film‐forming enabled HAAc‐assisted decoupling can open up new avenues for facile low‐cost manufacturing efficient stable adopting

Language: Английский

Citations

0
A review on the current status and chemistry of tin halide perovskite films for photovoltaics DOI Creative Commons
Jake Hardy, Holger Fiedler, J. Kennedy

et al.

Progress in Materials Science, Journal Year: 2025, Volume and Issue: unknown, P. 101446 - 101446

Published: Jan. 1, 2025

Language: Английский

Citations

0
Constructing n/n− Type Perovskite Homojunctions to Achieve High‐Efficiency and Stable Printable Mesoscopic Perovskite Solar Cells DOI Open Access
Chang Chen, Wenfeng Liu, Yiwen Chen

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 28, 2025

Abstract In recent years, carbon‐based printable mesoscopic perovskite solar cells (p‐MPSCs) without hole transport layers have garnered considerable interest because of their outstanding benefits in terms stability and cost. However, the use carbon electrodes instead materials noble metal leads to energy level mismatch, which limits power conversion efficiency (PCE) p‐MPSCs. this work, a molecular doping strategy is proposed employing cyclopentylmethanamine passivate surface subsurface crystal defects while inducing an shift toward p‐type region within electrodes. This approach facilitates formation homojunction at micro‐interfaces between perovskites. Results demonstrate that optimizes internal alignment devices, thereby increasing driving force for transfer Ultimately, devices optimized through increase PCE from 17.50% 19.50% retaining over 92% initial after 150 days air ambiance. study provides straightforward effective designing high‐efficiency stable

Language: Английский

Citations

0
Optimization of Crystal Growth and Defect Passivation of FASnI3 Film by Using 2-Pyridylthiourea for Sn-Based Perovskite Solar Cells DOI
Md. Emrul Kayesh, Yulu He, Md. Abdul Karim

et al.

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

Published: Feb. 13, 2025

Language: Английский

Citations

0