Efficient Functional Compensation Layer Integrated with HTL for Improved Stability and Performance in Perovskite Solar Cells

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

Published: Jan. 5, 2025

Improving the interface characteristics between hole-transport layer (HTL) and perovskite absorber is crucial for achieving maximum efficiency in inverted solar cells (PSCs). This paper presents an effective functional compensation (FCL) composed of benzothiophene derivatives, particularly 5-(trifluoromethyl)-1-benzothiophene-2-carboxylic acid (TFMBTA); this introduced MeO-2PACz HTL to improve interfacial them. FCL improves charge transfer, hole extraction, deposition by improving surface morphology optimizing energy level alignment. The groups TFMBTA effectively passivate defects. As a result, introduction markedly reduces non-radiative recombination at layer. MeO-2PACz-based PSCs with demonstrated impressive peak power conversion 23.85%, accompanied substantially enhanced open-circuit voltage (Voc), fill factor (FF), long-term stability. Similarly, introducing PEDOT:PSS both stability PSCs, demonstrating universality FCLs across different types HTLs.

Language: Английский

---

Isomerizing Passivators in Perovskite Solar Cells: The Impact of Molecular Spatial Configuration

ACS Materials Letters, Journal Year: 2025, Volume and Issue: unknown, P. 544 - 552

Published: Jan. 9, 2025

Language: Английский

---

Cyanovinyl Phosphonic Acid Based Molecular Additives for Highly Efficient and Stable Formamidinium‐Cesium Lead Lodide Perovskite Solar Cells

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

Published: March 19, 2025

Abstract Formamidinium‐cesium lead iodide perovskites (FA 1‐x Cs x PbI 3 , 0 < 0.1) are promising solar cell absorber materials with favorable bandgap and high thermal stability. However, the fabrication of high‐quality FA films large grain size, stable black phase, uniform cations distribution, minimal defects remains challenging. Here, efficacy cyanovinyl phosphonic acid (CPA) based molecular additives in fabricating 0.95 0.05 is reported. The CPA unit shows strong interactions all species (PbI 2 ), formamidinium (FAI), cesium (CsI) precursor solution, thus significantly alleviating inhomogeneous crystallization this mixed‐cation system. resulting exhibit enlarged size homogenized cation presence CPA‐based molecules final perovskite enhances optoelectronic qualities photostability owing to efficient passivation interaction perovskite. With optimizations on adding concentrations, inverted structured cells an optimal additive (Ph‐CPA) achieve power conversion efficiencies (PCEs) up 26.25%. Moreover, lifespans (T90, time corresponding 90% initial PCE retained) devices unprecedentedly prolonged from hundreds hours over 1000 3000 h under light stresses (ISOS‐L‐2I, 85 °C) operational condition (ISOS‐L‐1I), respectively.

Language: Английский

---

Sustainable Mixed-Halide Perovskite Resistive Switching Memories Using Self-Assembled Monolayers as the Bottom Contact

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 15(30), P. 7635 - 7644

Published: July 22, 2024

The complex ionic-electronic conduction in mixed halide perovskites enables their use beyond von Neumann architectures implemented resistive switching memory devices. Although device fabrication based on perovskite compounds involves solution-processing at low temperatures, reducing further costs by eliminating expensive materials can improve compatibility with upscalable deposition techniques. Notably, the substrate which active layer is developed has been reported to severely affect its quality and thus overall performance. Hereby, we demonstrate sustainable manufacturing of memristive solar cells replacing poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine] (PTAA) that serves as a hole transporting (HTL) self-assembled monolayer (SAM), namely [2-(3,6-dimethoxy-9H-carbazol-9-yl)ethyl]phosphonic acid (MeO-2PACz). Multiple sequential current–voltage characteristics single devices are reported, average data multiple reference targeted compared. Resistive SAM exhibit improved performance having reduced SET voltage values narrower statistical variation compared PTAA. It shown both PTAA high ON/OFF ratio about 103 operating electric fields. Replacing an polymer-based HTL this approach reduces

Language: Английский

---

Enhanced hole extraction through in situ mixed self-assembled molecules for efficient inverted perovskite solar cells

Journal of Energy Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

---

Multifunctional molecule 4,5-dicyanoimidazole endowing perovskite solar cells with excellent efficiency and stability

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 46, P. 102780 - 102780

Published: May 28, 2025

Language: Английский

---

Is dipole the only thing that matters for inverted perovskite solar cells?

Chinese Journal of Structural Chemistry, Journal Year: 2024, Volume and Issue: 43(6), P. 100324 - 100324

Published: May 8, 2024

Language: Английский

---

Facile Approach for Fabricating Efficient and Stable Perovskite Solar Cells

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

Published: Nov. 7, 2024

Perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs) can be produced using a variety of methods, such as different fabrication device layout modification, and component interface engineering.

Language: Английский

---

Optimizing the light-humidity stability of formamidinium halide perovskites through intermediate phase and strain stress adjustment

Materials Today Energy, Journal Year: 2024, Volume and Issue: unknown, P. 101757 - 101757

Published: Nov. 1, 2024

Language: Английский

---

Dopant-free Tert-butyl Zn (II) Phthalocyanines: Impact of Substitution on Photo-Physical Properties in Their Role in Perovskite Solar Cells

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

We synthesized molecular hole-transporting materials featuring a zinc phthalocyanine (ZnPc) central core and modulated the non-peripheral position with different numbers of tert -butyl groups.

Language: Английский

---