Printable oil-NiOX hole transport layer enables efficient n-i-p perovskite solar cells with a high thermal stability

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(7), P. 2335 - 2340

Published: June 14, 2024

Language: Английский

---

Development of Dopant-Free N,N′-Bicarbazole-Based Hole Transport Materials for Efficient Perovskite Solar Cells

International Journal of Molecular Sciences, Journal Year: 2024, Volume and Issue: 25(23), P. 13117 - 13117

Published: Dec. 6, 2024

Efficient and stable hole-transport material (HTM) is essential for enhancing the efficiency stability of high-efficiency perovskite solar cells (PSCs). The commonly used HTMs such as spiro-OMeTAD need dopants to produce high efficiency, but those degrade film cause instability. Therefore, development dopant-free N,N'-bicarbazole-based HTM receiving huge attention preparing stable, cost-effective, efficient PSCs. Herein, we designed proposed seven distinct small-molecule-based (B1-B7), which are synthesized do not require fabricate To design this new series, performed synergistic side-chain engineering on synthetic reference molecule (B) by replacing two methylthio (-SCH3) terminal groups with a thiophene bridge electron-withdrawing acceptor. enhanced phase inversion geometry molecules resulted in reduced energy gaps better electrical, optical, optoelectronic properties. Density functional theory (DFT) time-dependent DFT simulations have been study precise photo-physical We also looked into effects holes electrons materials' structural photovoltaic properties, including light harvesting energy, frontier molecular orbital, transition density matrix, states, electron natural population analysis. Electron difference maps identify interfacial charge transfer from donor acceptor through bridge, analysis measures amount each portion donor, acceptor, most effectively represents role end-capped moieties facilitating transfer. Among these molecules, B6 has greatest absorbance (λ

Language: Английский

---

Toward Sustainable Perovskite Solar Cells: From Lead‐Free Materials to Environmental Concerns and Mitigation Strategies

EcoMat, Journal Year: 2025, Volume and Issue: 7(3)

Published: Feb. 19, 2025

ABSTRACT Perovskite solar cells (PSCs) have attracted considerable attention in the field of photovoltaics owing to their high power conversion efficiency (PCE), cost‐effective production methods, and versatile applications. However, widespread use lead (Pb)‐based materials PSCs poses challenges related toxicity environmental sustainability. This review explores recent advances development Pb‐free perovskite materials, such as tin (Sn)‐based, germanium (Ge)‐based, other B(IV) B(III) cation alternatives, while assessing electronic properties, stability, performance‐enhancing strategies. Additionally, we discuss green solvents fabrication techniques minimize impact. aims guide future research toward safe, efficient, environmentally sustainable PSC technologies, ensuring that benefits energy can be harnessed without compromising human health or environment. image

Language: Английский

---

Synergistic Effect of Solvent and Component Engineering for High‐Efficiency Carbon‐Based Perovskite Solar Cells

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

Published: March 4, 2025

It is highly desired to get rid of the high-temperature annealing process in manufacturing perovskite solar cells (PSCs) reduce production costs. Herein, films are designed by rapidly evaporating a mixture solvent consisting methylamine ethanol solution (MA-EtOH sol) and acetonitrile (ACN) (MA-EtOH-ACN) dopping different amounts formamidinium iodide (FAI) into CH3NH2PbI3 (MAPbI3) precursor solution; as result, step effectively eliminated while cell efficiency remains unchanged. The situ UV-vis absorption for monitoring crystallization shows that FAI retards rate, leading dense smooth film. also found synergistic effect composition engineering reduces defect density, boosts strength, enhances film stability. Consequently, high-performance ITO/SnO2/FA0.05MA0.95PbI3/carbon device obtained with high 18.74%, an excellent short circuit current 25.04 mA cm-2, open voltage 1.16 V, fill factor 64.53%. carbon-based exhibit outstanding This strategy offers reference producing efficient stable straightforward ink method.

Language: Английский

---

Suppression of Radical Cation Formation in Dopant-Free Hole-Transporting Materials to Inhibit Iodine Migration for Efficient and Stable Perovskite Solar Cells

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110859 - 110859

Published: March 1, 2025

Language: Английский

---