Modulating competitive adsorption of hybrid self-assembled molecules for efficient wide-bandgap perovskite solar cells and tandems

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 28, 2025

The employment of self-assembled molecular hybrid could improve buried interface in perovskite solar cells (PSCs). However, the interplay among monolayers (SAMs) during deposition process has not been well-studied. Herein, we study interaction between co-adsorbents and commonly used SAM material, [4-(3,6-dimethyl-9H-carbazol-9-yl)butyl]phosphonic acid (Me-4PACz) for wide-bandgap (WBG) PSCs. It is found that co-adsorbent, 6-aminohexane-1-sulfonic (SA) tends to fill uncovered sites without interference with Me-4PACz, ensuring formation a dense hole selective layer. Moreover, use SA/Me-4PACz mixed SAMs effectively reduce interfacial non-radiative recombination loss, optimize energy alignment at regulate crystallization WBG perovskite. As result, 1.77 eV PSCs deliver power conversion efficiency (PCE) 20.67% (20.21% certified) an impressive open-circuit voltage (VOC) 1.332 V (1.313 certified). By combining 1.26 narrow-bandgap (NBG) PSC, further fabricate 2-terminal all-perovskite tandem (TSCs) PCE 28.94% (28.78% 0.087 cm2 23.92% mini-module aperture area 11.3 cm2.

Язык: Английский

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Wide Bandgap Perovskites: A Comprehensive Review of Recent Developments and Innovations

Small, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Abstract Recent advances in wide‐bandgap (WBG) perovskite solar cells (PSCs) demonstrate a burgeoning potential to significantly enhance photovoltaic efficiencies beyond the Shockley–Queisser limit for single‐junction cells. This review explores multifaceted improvements WBG PSCs, focusing on novel compositions, halide substitution strategies, and innovative device architectures. The of iodine with bromine organic ions such as FA MA Cs lattice is emphasized its effectiveness achieving higher open‐circuit voltages reduced thermalization losses. Furthermore, integration advanced charge transport layers interface engineering techniques discussed critical minimizing voltage ( V OC ) deficits improving photo‐stability these utilization PSCs diverse applications semitransparent devices, indoor photovoltaics, multijunction tandem devices also explored, addressing both their current limitations solutions. culminates comprehensive assessment challenges impeding industrial scale‐up PSC technology offers perspective future research directions aimed at realizing highly efficient stable commercial applications.

Язык: Английский

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Chemical passivation and grain-boundary manipulation via in situ cross-linking strategy for scalable flexible perovskite solar cells

Science Advances, Год журнала: 2025, Номер 11(5)

Опубликована: Янв. 31, 2025

Flexible perovskite solar cells (f-PSCs) are considered the most promising candidates in portable power applications. However, high sensitivity of crystallization on substrate and intrinsic brittleness usually trade off performance f-PSCs. Herein, we introduced an initiator-free cross-linkable monomer (2,5-dioxopyrrolidin-1-yl) 5-(dithiolan-3-yl)pentanoate (FTA), which can chemically passivate defects enable real-time fine regulation crystallization. The resulting film exhibited higher crystallinity, enlarged grain size, reduced dependence substrate. In addition, cross-linked FTA [CL(FTA)] distributed along boundaries effectively released residual stress securely bound grains together. Consequently, CL(FTA)-modified flexible PSCs achieved a record-breaking efficiency 24.64% (certified 24.08%). Moreover, scalable potential has been verified by corresponding rigid modules, delivering impressive efficiencies 19.53 17.13%, respectively. Furthermore, optimized device demonstrated bending durability improved operational stability, thereby advancing progress f-PSCs toward industrialization.

Язык: Английский

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Hybrid Self‐Assembled Molecular Interlayers for Efficient and Stable Inverted Perovskite Solar Cells

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 21, 2025

Abstract Self‐assembled molecules (SAMs) have been widely employed as hole transport layers (HTLs) in inverted perovskite solar cells (PSCs). However, the carbazole core of [4‐(3,6‐dimethyl‐9H‐carbazol‐9‐yl)butyl]phosphonic acid (Me‐4PACz) is insufficiently effective for passivating defects at “bottom” films, and weak anchoring ability phosphate groups toward NiO x substrate appears to promote formation dimers, trimers, higher‐order oligomers, resulting molecular accumulation. Herein, a novel technique proposed combine Me‐4PACz with different thiol modify buried interface PSCs. Molecular dynamics simulations infrared scattering‐type scanning near‐field optical microscopy (IR s‐SNOM) results show that co‐depositing forms hybrid SAMs densely uniformly cover surface. The island‐like structure serves template forming bulk heterojunction composed interpenetrating networks MA‐rich FA‐rich domains, enabling efficient charge generation suppressed bimolecular recombination. Particularly, (3‐mercaptopropyl) trimethoxysilane (MPTMS) effectively prevents aggregation by multi‐dentate anchor on surface through hydrolytic condensation ─OCH 3 groups, while its ─SH passivate uncoordinated Pb 2+ perovskite/HTL interface. Consequently, SAMs‐modified PSC achieve champion photoelectric conversion efficiency (PCE) 25.4% demonstrated better operational stability.

Язык: Английский

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Phase-stable wide-bandgap perovskites enabled by suppressed ion migration

Journal of Energy Chemistry, Год журнала: 2024, Номер 96, С. 120 - 128

Опубликована: Апрель 17, 2024

Язык: Английский

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