Mitigating VOC Loss in Single‐Junction and Four‐Terminal Tandem Perovskite/Si Photovoltaics with D‐A Phthalocyanines Layers DOI
Chi Li,

Şifa Doğan,

Yuheng Li

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 6, 2024

Abstract The performance of perovskite solar cells (PSCs) is often constrained by significant open‐circuit voltage ( V OC ) losses attributed to non‐radiative recombination processes induced detrimental trap states. Surface treatments using passivating ligands typically involve single active binding sites on perovskite, posing challenges for effective passivation. Here, an aromatic donor‐acceptor (D‐A) configured phthalocyanine treatment proposed aim at dual‐site passivation uncoordinated lead ions and mitigation shallow deep‐level defects the surface. resulting benign p‐type surface facilitates a more favorable energy level alignment reduces energetic mismatches perovskite/Spiro‐OMeTAD interface. Pc‐BTBC, with its D‐A configuration, demonstrated compatibility various compositions. Optimized PSCs achieves power conversion efficiency (PCE) 25.15% deficit 0.379 V. Furthermore, encapsulated devices exhibited enhanced stability under damp‐heat conditions (ISOS‐D‐2, 50% RH, 65°C) T 92 1000 h maintained maximum point tracking continuous light in ambient air 65°C (ISOS‐L‐2). Notably, fabricated wide‐bandgap semitransparent (ST‐PSCs) achieved PCE 20.29%, while four‐terminal perovskite/silicon tandem (4T‐P/STSCs) 29.38%. This study provides insights into minimizing represents progress toward commercializing photovoltaics.

Language: Английский

Minimizing Interfacial Energy Loss and Volatilization of Formamidinium via Polymer‐Assisted D–A supramolecular Self‐Assembly Interface for Inverted Perovskite Solar Cells with 25.78% Efficiency DOI
Congcong Tian,

Anxin Sun,

Rongshan Zhuang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract 2D perovskite passivation strategies effectively reduce defect‐assisted carrier nonradiative recombination losses on the surface. Nonetheless, severe energy are causing by thermalization, interfacial recombination, and conduction band offset still persist at heterojunction perovskite/PCBM interfaces, which limits further performance enhancement of inverted PSCs. Here, 5,10,15,20‐tetrakis(pentafluorophenyl)porphyrin (5FTPP) is introduced between 3D/2D PCBM. Compared to tetraphenylporphyrin without electron‐withdrawing fluoro‐substituents, 5FTPP can self‐assemble with PCBM interface into donor–acceptor (D–A) complex stronger supramolecular interaction lower transfer losses. This rapid from donor acceptor (PCBM) within femtosecond scale demonstrated enlarge hot extraction rates ranges, reducing thermalization Furthermore, incorporation polystyrene derivative (PD) reinforces D–A inhibiting self‐π–π stacking 5FTPP, while fine‐tuning suppressing via Schottky barrier, dipole, n‐doping. Notably, multidentate anchoring PD‐5FTPP FA + , Pb 2+ I − mitigates adverse effects volatilization during thermal stress. Ultimately, devices achieve a power conversion efficiency 25.78% (certified: 25.36%), maintaining over 90% initial after 1000 h continuous illumination maximum point (65 °C) under ISOS‐L‐2 protocol.

Language: Английский

Citations

14
Enhancing Hole Transport Uniformity for Efficient Inverted Perovskite Solar Cells through Optimizing Buried Interface Contacts and Suppressing Interface Recombination DOI

Xilai He,

Hui Chen, Jiabao Yang

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: 63(52)

Published: Aug. 28, 2024

Abstract [4‐(3,6‐dimethyl‐9H‐carbazol‐9yl)butyl]phosphonic acid (Me‐4PACz) self‐assembly material has been recognized as a highly effective approach for mitigating nickel oxide (NiO x ) surface‐related challenges in inverted perovskite solar cells (IPSCs). However, its uneven film generation and failure to effectively passivate the buried interface defects limit device‘s performance improvement potential. Herein, p‐xylylenediphosphonic (p‐XPA) containing bilateral phosphate groups (−PO 3 H 2 is introduced an layer between NiO /Me‐4PACz layer. P‐XPA can flatten surface of hole transport optimize contact. Meanwhile, p‐XPA achieves better energy level alignment promotes interfacial transport. In addition, −PO chelate with Pb 2+ form hydrogen bond FA + (formamidinium cation), thereby suppressing non‐radiative recombination loss. Consequently, IPSC modification champion power conversion efficiency 25.87 % (certified at 25.45 %) laboratory scale (0.0448 cm ). The encapsulated target device exhibits operational stability. Even after 1100 hours maximum point tracking 50 °C, remains impressive 82.7 initial efficiency. Molecules featuring passivation contact inhibit recombination, providing enhancing stability devices.

Language: Английский

Citations

12
Role of NiO in wide-bandgap perovskite solar cells based on self-assembled monolayers DOI

Afei Zhang,

Mingyu Li, Chong Dong

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 494, P. 153253 - 153253

Published: June 18, 2024

Language: Английский

Citations

11
Dual functionality of charge extraction and interface passivation by self-assembled monolayers in perovskite solar cells DOI
Muhammad Azam, Tian Du, Zhongquan Wan

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(19), P. 6974 - 7016

Published: Jan. 1, 2024

This review overviews the challenges at buried interface of PSCs, defect passivation capabilities SAMs, and its effectiveness compared to other passivating agents.

Language: Английский

Citations

11
Efficient Charge Transport in Inverted Perovskite Solar Cells via 2D/3D Ferroelectric Heterojunction DOI
Zihao Li,

Anxin Sun,

Yiting Zheng

et al.

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: April 9, 2024

Abstract While the 2D/3D heterojunction is an effective method to improve power conversion efficiency (PCE) of perovskite solar cells (PSCs), carriers are often confined in quantum wells (QWs) due unique structure 2D perovskite, which makes charge transport along out‐of‐plane direction difficult. Here, a ferroelectric formed by 4,4‐difluoropiperidine hydrochloride (2FPD) inverted PSCs reported. The enriched 2 PbI 4 layer with n = 1 on surface exhibits response and has oriented dipoles direction. ferroelectricity dipole facilitates enhancement built‐in electric field (1.06 V) delay cooling process hot carriers, reflected high carrier temperature (above 1400 K) prolonged photobleach recovery time (139.85 fs, measured at bandgap), improving conductivity. In addition, alignment energy levels optimized exciton binding (32.8 meV) reduced changing dielectric environment surface. Finally, 2FPD‐treated achieve PCE 24.82% (certified: 24.38%) synergistic effect defect passivation, while maintaining over 90% their initial after 1000 h maximum point tracking.

Language: Английский

Citations

10
Spiro-type Self-assembled Hole Transporting Monolayer for Highly Efficient and Stable Inverted Perovskite Solar Cells and Modules DOI Creative Commons
Xianfu Zhang, Botong Li,

Shaochen Zhang

et al.

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

The twisted spiro-type SAM 4PA-spiro effectively suppresses molecular aggregation and ensures appropriate energy levels, providing an efficiency of 25.28 21.87% for the p–i–n PSCs (0.05 cm 2 ) modules (29.0 ).

Language: Английский

Citations

9
Molecular Design of Hole-Collecting Materials for Co-Deposition Processed Perovskite Solar Cells: A Tripodal Triazatruxene Derivative with Carboxylic Acid Groups DOI
Minh Anh Truong,

Tsukasa Funasaki,

Yuta Adachi

et al.

Journal of the American Chemical Society, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

High-performance and cost-effective hole-collecting materials (HCMs) are indispensable for commercially viable perovskite solar cells (PSCs). Here, we report an anchorable HCM composed of a triazatruxene core connected with three alkyl carboxylic acid groups (3CATAT-C3). In contrast to the phosphonic acid-containing tripodal analog (3PATAT-C3), 3CATAT-C3 molecules can form hydrophilic monolayer on transparent conducting oxide surface, which is beneficial subsequent film deposition in traditional layer-by-layer fabrication process. More importantly, larger diffusion coefficient higher surface energy make suitable simplified, one-step co-deposition process was directly added as part precursor solution. predominantly located at bottom after spin-coating mixed solution, facilitating charge extraction. Devices fabricated by this method exhibit superior performance champion power conversion efficiency over 23%. The unencapsulated devices showed good operational stability (retaining 90% initial output 100 h), thermal durability 95% value heating 105 °C under air), excellent storage (showing no drop 8000 h). Based results time-of-flight secondary-ion mass spectroscopy (ToF-SIMS) order nuclear magnetic resonance (DOSY), elucidated effect anchoring HCMs PSCs well mechanism Our findings provide valuable insights molecular design multifunctional materials, further advancing cells.

Language: Английский

Citations

1
Lewis Base Strategy for Crystallization Control and Buried Interface Passivation on Hydrophobic PTAA Substrate for Efficient Tin–Lead Perovskite and All-Perovskite Tandem Solar Cells DOI
Jinling Chen, Jiajun Du,

Jingyu Cai

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1117 - 1128

Published: Feb. 7, 2025

Language: Английский

Citations

1
Toward Maximizing Hole Selection with Self-Assembled Monolayers in Sn-Based Perovskite Solar Cells DOI Creative Commons
Donghoon Song, S.W. Shin,

Hui‐Ping Wu

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1292 - 1312

Published: Feb. 17, 2025

Language: Английский

Citations

1
Micromolecule Postdeposition Process for Highly Efficient Inverted Perovskite Solar Cells DOI

Bing’e Li,

Jun‐Jie Xing,

Vlad Budnik

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(9), P. 14269 - 14277

Published: Feb. 24, 2025

Inverted perovskite solar cells (PSCs) have achieved great development, contributed by the advance of self-assembled monolayer (SAM) hole-transporting layers (HTLs) due to their distinctive molecular designability. However, SAM HTLs still present challenges achieving a compact and ordered surface, resulting in vacancies defects at interface as well adversely affecting growth perovskites. In this work, we propose micromolecule postdeposition process design HTL form high-quality perovskites achieve highly efficient inverted PSCs. We introduce etidronic acid (EA) fill reduce improve growing The EA can anchor substrate through P-OH anchors, occupying left MeO-4PACz, simultaneously create interaction with P═O C-OH functional groups. effectively fills reduces interface, passivates perovskites, facilitates carrier transport. Consequently, champion PCE 24.42% is for target PSCs, which much higher than efficiency (20.08%) control. This research provides guided widely applicable strategy development further advances performance

Language: Английский

Citations

1