Templated-seeding renders tailored crystallization in perovskite photovoltaics: path towards future efficient modules

Zhang, Jing; Mao, Peng; Bi, Weihui; Wang, Bing; Li, Yungui; Han, Gaorong; Zhong, Yufei

doi:10.1039/d3ta06067e

“…21 Furthermore, seed-assisted growth (crystal seeding method) is an effective method for precise regulation of crystal growth. 22 For instance, Zhang et al proposed a "heterogeneous seeding-induced crystallization (hetero-SiC)" strategy, wherein di-tert-butyl(methyl)phosphonium tetrafluoroborate ((t-Bu) 2 PMeHBF 4 ) was introduced into the precursor. The lowsolubility complex formed between (t-Bu) 2 PMeHBF 4 and PbI 2 was used as a crystal seed to induce perovskite crystallization during solvent evaporation; the final PSCs fabricated by hetero-SiC strategy obtained a PCE of 24.0%.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Furthermore, seed-assisted growth (crystal seeding method) is an effective method for precise regulation of crystal growth . For instance, Zhang et al proposed a “heterogeneous seeding-induced crystallization (hetero-SiC)” strategy, wherein di- tert -butyl(methyl)phosphonium tetrafluoroborate (( t -Bu) 2 PMeHBF 4 ) was introduced into the precursor.…”

Section: Introductionmentioning

confidence: 99%

Crystallinity Control and Strain Release in Wide-Bandgap Perovskite Film via Seed-Induced Growth for Efficient Photovoltaics

Yang,

Wu,

Guo

et al. 2024

ACS Appl. Mater. Interfaces

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The seed method stands out as a straightforward and efficient approach for fabricating high-performance perovskite solar cells (PSCs). In this study, we propose the utilization of an antisolvent as an additive to induce crystal seeding, thereby facilitating the growth of wide-bandgap perovskite grains. Specifically, we introduce three commonly used antisolvents�ethyl acetate (EA), isopropanol (IPA), and chlorobenzene (CB)�directly into the perovskite precursor solution to generate perovskite seeds, which serve to promote subsequent nucleation. This antisolvent−crystal seeding method (ACSM) results in increased grain sizes, reduced film defects, and overall improved film quality. Consequently, the power conversion efficiencies (PCEs) of 1.647 eV PSCs with EA, IPA, and CB additives are recorded at 19.86%, 20.61%, and 20.45%, respectively, surpassing that of the reference device with a PCE of 18.83%. Furthermore, the stability of the PSCs prepared through ACSM is notably enhanced. Notably, PSCs optimized with IPA retain 75% of the original PCE after being stored in ambient air conditions (25 °C, RH ∼ 15%) for 30 days, better than the CB-added (64%) and the EA-added devices (53%), while the reference devices only retain 31% of the initial PCE. Moreover, even after continuous thermal annealing at 50 °C for 200 h, IPA-assisted devices demonstrate the best stability, followed by those with CB and EA, with the reference exhibiting the poorest stability.

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Direct Synthesis of Perovskite Quantum Dot Photoresist for Direct Photolithography

Zhou,

Gao,

Shi

et al. 2024

Angewandte Chemie

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Perovskite quantum dots (PQDs) photoresists are promising building blocks for photolithographically patterned devices. However, their complex synthesis and combination processes limit their optical properties and potential patterning applications. Here, we present an exceptionally simple strategy for the synthesis of PQDs photoresist. Unlike traditional approaches that involve centrifugation, separation, and combination processes, our direct synthesis technique using polymerizable acrylic monomer as solvent to fabricate PQDs photoresists without complex post‐synthesis process. We demonstrate that the change in solubility of the precursors is the main reason for the formation of PQDs in the polymerizable monomer. By direct photolithography, colorful PQD patterns with high photoluminescence quantum yields and excellent fluorescence uniformity are successfully demonstrated. This work opens a new avenue for the direct synthesis of PQDs photoresist, expanding their applications in various integrated applications, such as photonic, energy harvesting, and optoelectronic devices.

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Direct Synthesis of Perovskite Quantum Dot Photoresist for Direct Photolithography

Zhou,

Gao,

Shi

et al. 2024

Angew Chem Int Ed

0

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Perovskite quantum dots (PQDs) photoresists are promising building blocks for photolithographically patterned devices. However, their complex synthesis and combination processes limit their optical properties and potential patterning applications. Here, we present an exceptionally simple strategy for the synthesis of PQDs photoresist. Unlike traditional approaches that involve centrifugation, separation, and combination processes, our direct synthesis technique using polymerizable acrylic monomer as solvent to fabricate PQDs photoresists without complex post‐synthesis process. We demonstrate that the change in solubility of the precursors is the main reason for the formation of PQDs in the polymerizable monomer. By direct photolithography, colorful PQD patterns with high photoluminescence quantum yields and excellent fluorescence uniformity are successfully demonstrated. This work opens a new avenue for the direct synthesis of PQDs photoresist, expanding their applications in various integrated applications, such as photonic, energy harvesting, and optoelectronic devices.

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Templated-seeding renders tailored crystallization in perovskite photovoltaics: path towards future efficient modules

Abstract: The utilization of templated seed crystals enables tailored crystallization in perovskite photovoltaic modules, advancing the potential for commercialization.

Cited by 3 publications

References 88 publications

Crystallinity Control and Strain Release in Wide-Bandgap Perovskite Film via Seed-Induced Growth for Efficient Photovoltaics

Crystallinity Control and Strain Release in Wide-Bandgap Perovskite Film via Seed-Induced Growth for Efficient Photovoltaics

Direct Synthesis of Perovskite Quantum Dot Photoresist for Direct Photolithography

Direct Synthesis of Perovskite Quantum Dot Photoresist for Direct Photolithography

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