In situ epitaxial growth of blocking structure in mixed-halide wide-band-gap perovskites for efficient photovoltaics

Li, Zhuoxin; Li, Xing; Chen, Xianggang; Cui, Xiaoxia; Guo, Chunlin; Feng, Xiaolong; Ren, Dongxu; Mo, Yaqi; Yang, Miao; Huang, Hao; Jia, Rui; Liu, Xuepeng; Li, Han; Dai, Songyuan

doi:10.1016/j.joule.2023.04.009

Cited by 17 publications

(9 citation statements)

References 30 publications

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“…1,6–9 To break the efficiency limit of single-junction cells, perovskite tandem solar cells have been developed rapidly in the last several years. 10–22 Among them, all-perovskite tandem solar cells have promising prospects, thanks to their adjustable bandgaps ranging from 1.1 to 2.3 eV. So far, the highest efficiency achieved for all-perovskite tandem solar cells has been 28%, surpassing that of single-junction ones.…”

Section: Introductionmentioning

confidence: 99%

Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells

Cui,

Huang,

Zhou

et al. 2023

Energy Environ. Sci.

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Section: Introductionmentioning

confidence: 99%

Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells

Cui,

Huang,

Zhou

et al. 2023

Energy Environ. Sci.

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“…In this scenario, the iodide-rich regions will compromise the open-circuit voltage (V oc ) deficit and also the stability. [37] Phosphonic acid, with stronger binding strength to the oxide substrates, is currently the most preferred anchoring group of SAM-based HSLs. [38] To further enhance the illumination stability of these SAM-containing solar modules, Zhang et al innovatively introduced a cyanovinyl group near the phosphonic acid on a methoxyl-substituted triphenylamine terminal.…”

Section: Introductionmentioning

confidence: 99%

Fully Aromatic Self‐Assembled Hole‐Selective Layer toward Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with Ultraviolet Resistance

Li,

Zhang,

Zhang

et al. 2023

Angew Chem Int Ed

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Ultraviolet‐induced degradation has emerged as a critical stability concern impeding the widespread adoption of perovskite solar cells (PSCs), particularly in the context of phase‐unstable wide‐band gap perovskite films. This study introduces a novel approach by employing a fully aromatic carbazole‐based self‐assembled monolayer, denoted as (4‐(3,6‐dimethoxy‐9H‐carbazol‐9‐yl)phenyl)phosphonic acid (MeO‐PhPACz), as a hole‐selective layer (HSL) in inverted wide‐band gap PSCs. Incorporating a conjugated linker plays a pivotal role in promoting the formation of a dense and highly ordered HSL on substrates, facilitating subsequent perovskite interfacial interactions, and fostering the growth of uniform perovskite films. The high‐quality film could effectively suppress interfacial non‐radiative recombination, improving hole extraction/transport efficiency. Through these advancements, the optimized wide‐band gap PSCs, featuring a band gap of 1.68 eV, attain an impressive power conversion efficiency (PCE) of 21.10 %. Remarkably, MeO‐PhPACz demonstrates inherent UV resistance and heightened UV absorption capabilities, substantially improving UV resistance for the targeted PSCs. This characteristic holds significance for the feasibility of large‐scale outdoor applications.

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“…[10] For example, the halide segregation will produce a Br-rich perovskite region with high trap density and many deep-level defects, as well as an I-rich perovskite region that can become a charge recombination center and capture photogenerated carriers to prevent their transfer. [11] For mixed perovskites, the migration activation energy of X-site halide anions (0.1 eV) is lower than that of A-site cations (0.5 eV) and Bsite metal cations (0.8 eV). [12][13][14] Under illumination, due to the low electronegativity of iodine, I i − is easier to be trapped and oxidized by holes than Br i − , and rapid separation and aggregation occur.…”

Section: Introductionmentioning

confidence: 99%

Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

Su,

Yu,

Dong

et al. 2023

Advanced Energy Materials

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Wide‐bandgap (WBG) perovskite solar cells (PSCs) have drawn great attention owing to their promising potential for constructing efficient tandem solar cells. However, the rapid crystallization results in poor film properties and easy formation of defects, thereby greatly restricting the acquisition of a small open‐circuit voltage (VOC) deficit due to the severe nonradiative recombination. Herein, it introduced the triethanolamine borate (TB) to effectively slow down the rapid crystallization for preparing highly crystalline and uniform WBG perovskite films with reduced defects. The strong intermolecular interaction (e.g., coordination and hydrogen bond) between TB and perovskite can suppress the halide vacancy formation and inhibit phase segregation for improving long‐term stability. The devices based on a 1.65 eV perovskite absorber achieved a high efficiency of 21.55% with a VOC of 1.24 V, demonstrating the VOC deficit is as low as 0.41 V, which is one of the lowest reports. By combining a semitransparent WBG subcell with a narrow‐bandgap tin‐based PSC, the four‐terminal tandem solar cell delivers a high efficiency of 26.48%.

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In situ epitaxial growth of blocking structure in mixed-halide wide-band-gap perovskites for efficient photovoltaics

Cited by 17 publications

References 30 publications

Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells

Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells

Fully Aromatic Self‐Assembled Hole‐Selective Layer toward Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with Ultraviolet Resistance

Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

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In situ epitaxial growth of blocking structure in mixed-halide wide-band-gap perovskites for efficient photovoltaics

Cited by 17 publications

References 30 publications

Lead halide coordination competition at buried interfaces for low VOC-deficits in wide-bandgap perovskite solar cells

Lead halide coordination competition at buried interfaces for low VOC-deficits in wide-bandgap perovskite solar cells

Fully Aromatic Self‐Assembled Hole‐Selective Layer toward Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with Ultraviolet Resistance

Crystallization Regulation and Defect Passivation for Efficient Inverted Wide‐Bandgap Perovskite Solar Cells with over 21% Efficiency

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Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells

Lead halide coordination competition at buried interfaces for low V_OC-deficits in wide-bandgap perovskite solar cells