Regulating Strain and Suppressing Defect States Through Polymer Ionization and Chemical Chelation for Efficient Inverted Flexible Perovskite Solar Cells DOI Open Access

Shuguang Cao,

Tongjun Zheng,

Zhuoneng Bi

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 18, 2024

Flexible perovskite solar cells (FPSCs) have great promise for applications in wearable technology and space photovoltaics. However, the unpredictable crystallization of on flexible substrates results significantly lower efficiency mechanical durability than industry standards. A strategy is investigated employing polymer electrolyte poly(allylamine hydrochloride) (PAH) to regulate passivate defect states films substrates. The weakly acidic precursor allows PAH undergo partial ionization, leading protonation some ─NH

Language: Английский

Spatially Isomeric Fulleropyrrolidines Enable Controlled Stacking of Perovskite Colloids for High‐Performance Tin‐Based Perovskite Solar Cells DOI Open Access
Jingfu Chen,

Jiefeng Luo,

Yuqing Li

et al.

Angewandte Chemie International Edition, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

Abstract The advancement of tin‐based perovskite solar cells (TPSCs) has been severely hindered by the poor controllability crystal growth and energy level mismatch between fullerene‐based electron transport layer (ETL). Here, we synthesized three cis‐configured pyridyl‐substituted fulleropyrrolidines (PPF), specifically 2‐pyridyl (PPF2), 3‐pyridyl (PPF3), 4‐pyridyl (PPF4), utilized them as precursor additives to regulate crystallization kinetics during film formation. spatial distance two pyridine groups in PPF2, PPF3, PPF4 increases sequentially, enabling interact with more colloidal particles. These interactions effectively enlarge colloid size decelerate rate perovskite, resulting high‐quality PPF4‐based films reduced defect density lower exciton binding energy. Additionally, incorporated a well‐defined fullerene bis‐adduct, C 60 BB, an interlayer PCBM layers optimize alignment. Through synergistic effects our champion device achieved efficiency 16.05 % (certified: 15.86 %), surpassing 16 bottleneck setting new benchmark for TPSCs. Moreover, devices exhibited outstanding stability, retaining 99 their initial after 600 hours maximum power point tracking under 1 sun condition.

Language: Английский

Citations

4
Spatially Isomeric Fulleropyrrolidines Enable Controlled Stacking of Perovskite Colloids for High‐Performance Tin‐Based Perovskite Solar Cells DOI Open Access
Jingfu Chen,

Jiefeng Luo,

Yuqing Li

et al.

Angewandte Chemie, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 3, 2025

Abstract The advancement of tin‐based perovskite solar cells (TPSCs) has been severely hindered by the poor controllability crystal growth and energy level mismatch between fullerene‐based electron transport layer (ETL). Here, we synthesized three cis‐configured pyridyl‐substituted fulleropyrrolidines (PPF), specifically 2‐pyridyl (PPF2), 3‐pyridyl (PPF3), 4‐pyridyl (PPF4), utilized them as precursor additives to regulate crystallization kinetics during film formation. spatial distance two pyridine groups in PPF2, PPF3, PPF4 increases sequentially, enabling interact with more colloidal particles. These interactions effectively enlarge colloid size decelerate rate perovskite, resulting high‐quality PPF4‐based films reduced defect density lower exciton binding energy. Additionally, incorporated a well‐defined fullerene bis‐adduct, C 60 BB, an interlayer PCBM layers optimize alignment. Through synergistic effects our champion device achieved efficiency 16.05 % (certified: 15.86 %), surpassing 16 bottleneck setting new benchmark for TPSCs. Moreover, devices exhibited outstanding stability, retaining 99 their initial after 600 hours maximum power point tracking under 1 sun condition.

Language: Английский

Citations

1
High Efficiency Tin Halide Perovskite Solar Cells with Over 1 Micrometer Carrier Diffusion Length DOI
Miao Zhang, Cheng Wu,

Mingyu Yin

et al.

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

Published: Sept. 5, 2024

Abstract Sn 2+ oxidation and halide migration are recognized as the major constraints for high‐performance tin perovskite solar cells (TPSCs), they increase defect state density thus decrease carrier lifetime diffusion length. In this study, two chloride salts of thiophene derivatives reported to interact with through ligand bonding immobilize ions hydrogen bonding. Due stronger interactions between 1‐(2‐thiophene)ethylamine hydrochloride (α‐TEACl) components, better passivation is realized. addition, thanks coordination ability, lattice stability enhanced, photoluminescence length substantially extended from 4.51 ns 180.78 nm 23.17 ns, 1102.20 nm, respectively, which both among highest values perovskites. Consequently, target device α‐TEACl achieved a power conversion efficiency (PCE) up 14.02%. At same time, showed excellent long‐term operational stability, retaining ≈92% initial after 2000 h aging in N 2 atmosphere. This work provides new perspective regulating ion lead‐free

Language: Английский

Citations

5
Copper-Catalyzed N-Heteroannulation of [60]Fullerene with Aryl Sulfonamides and Paraformaldehyde: Synthesis and Functionalization of [60]Fullerene-Fused Imidazolidines DOI

Zheng‐Chun Yin,

Majid Hussain, Shi-Qi Ye

et al.

Organic Letters, Journal Year: 2025, Volume and Issue: unknown

Published: March 12, 2025

The Cu(II)-catalyzed N-heteroannulation reaction of [60]fullerene (C60) with aryl sulfonamides and paraformaldehyde has been disclosed for the synthesis diverse C60-fused imidazolidines, which one or both ArSO2 moieties could be removed selectively. Further transformations into unexpected bicyclic 1,2,3,4-adduct imidazolidinium iodide salt have also demonstrated. A plausible mechanism is proposed on basis control experiments. employed as an additive in PC61BM layer inverted planar perovskite solar cells to increase power conversion efficiency.

Language: Английский

Citations

0
Reducing the Vibration of Carbazole‐Based Self‐Assembled Monolayers for High‐Performance Inverted Perovskite Solar Cells Through the Deuteration Strategy DOI
Desheng Li, Kai Chen, Shaojian Li

et al.

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

Published: April 4, 2025

Carbazole-based self-assembled small molecules are promising and commonly used hole transport layers (HTLs) materials for inverted perovskite solar cells (IPSCs). Here, a novel perdeuterated carbazole-based SAM named 4PACzd8 is obtained. Owing to the deuteration strategy, which causes reduction in molecular vibration frequency, modulates crystallization atop suppresses interfacial non-radiative recombination. Furthermore, it noteworthy that demonstrates heightened UV absorption properties, thereby offering enhanced protection underlying film from degradation resulting exposure. Compared with non-deuterated analog 4PACz, champion device employing showed higher power conversion efficiency (PCE) of 24.87% excellent stability. The impressive PCE by far one highest values IPSCs simple SAMs as HTLs.

Language: Английский

Citations

0
Carboxylic Acid-Assisted Synthesis of Tin(II) Iodide: Key for Stable Large-Area Lead-Free Perovskite Solar Cells DOI Creative Commons
Wiktor Żuraw, Dominik J. Kubicki, R. Kudrawiec

et al.

ACS Energy Letters, Journal Year: 2024, Volume and Issue: 9(9), P. 4509 - 4515

Published: Aug. 22, 2024

Despite significant progress in tin-based perovskites, the development of stable and high-performance perovskite solar cells (TPSCs) remains a challenge. In this pursuit, multitude strategies have been explored, encompassing use reducing agents, antioxidants, bulky cations, customized solvent systems. We propose an improved approach for synthesizing SnI

Language: Английский

Citations

3
Managing Crystallization and Phase Distribution via 2D Perovskite Seed Crystals for 2D‐3D Tin‐based Perovskite Solar Cells DOI

Fenqi Du,

Hao Gu,

Wenye Jiang

et al.

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

Published: Sept. 23, 2024

Abstract Various popular large organic cations have been extensively used as the essential additives in perovskite precursor solution due to their satisfactory passivation effect but may produce low‐n value (n ≤ 2) 2D phases with undesired distribution. Meanwhile, remaining easy oxidation of Sn 2+ and p‐type self‐doping perovskites are also detrimental ultimate photovoltaic properties stability tin (Sn)‐based solar cells (PSCs). Here, 3AMPYSnI 4 crystals (3AMPY = 3‐(aminomethyl)pyridinium)) designed applied adjust crystallization process phase distribution Sn‐based perovskite. Consequently, strong coordination interaction between 3AMPY 3D components introduced nucleation sites by not only decreases increases phase, inhibits self‐p‐doping perovskites, resulting lower trap density non‐radiative recombination loss, faster carrier extraction transfer, higher for 2D‐3D PSCs. As a result, optimized devices deliver an increased power conversion efficiency from initial 10.91% 13.28% retain 96.0% original performance more than 3000 h nitrogen (N 2 ) atmosphere.

Language: Английский

Citations

3
Defect Passivation: Physisorption or Chemisorption? A Nonadiabatic Molecular Dynamics Study DOI
Qi Zhao, Jinlu He

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(36), P. 9280 - 9287

Published: Sept. 5, 2024

Nonradiative charge recombination, originating from defects, limits the use of semiconductors in solar energy conversion technologies. Defect passivation is an effective approach to eliminating recombination centers. Focusing on InSe semiconductor, we have shown that adsorption configurations passivators a strong impact defect passivation, using nonadiabatic molecular dynamics combined with time-dependent density functional theory. The simulations demonstrate physisorption passivator cannot eliminate centers, resulting fast nonradiative recombination. By contrast, chemisorption are able form covalent bonds indium, remove thereby prolonging time by more than factor 10 because decreased coupling and channels for losses. This study uncovers microscopic effects photogenerated carrier dynamics, suggesting essential passivation.

Language: Английский

Citations

2
Mechanistic Exploration of Determinants for the Fullerene@FASnI3 Interface Stability: Surface Termination and Monovalent Cation Rotation DOI
Mengmeng Yang, Jingyi Qiao, Yan Zheng

et al.

The Journal of Physical Chemistry A, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 24, 2024

The investigation into the interfacial properties between fullerene compounds and Sn-based perovskites (Sn-PVSK) holds extraordinary significance for advancing efficient stable Pb-free perovskite solar cells. This study is first theoretical exploration to examine their using Ab initio molecular dynamics (AIMD) simulations trajectory analysis methods with C60@FASnI

Language: Английский

Citations

1
Innovative Materials for High-Performance Tin-Based Perovskite Solar Cells: A Review DOI Open Access
Xiansheng Wang, Jianjun Yang, Jian Zhong

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(21), P. 3053 - 3053

Published: Oct. 30, 2024

With the rapid development of lead-based perovskite solar cells, tin-based cells are emerging as a non-toxic alternative. Material engineering has been an effective approach for fabrication efficient cells. This paper summarizes novel materials used in over past few years and analyzes roles various devices. It is found that self-assembling fullerene derivatives have shown remarkable performance Finally, this article discusses design strategies new materials, providing constructive suggestions innovative future.

Language: Английский

Citations

0