Amorphous F‐doped TiOx Caulked SnO2 Electron Transport Layer for Flexible Perovskite Solar Cells with Efficiency Exceeding 22.5% DOI
Linghui Zhang,

Chao Fu,

Shi Wang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(11)

Published: Jan. 3, 2023

Abstract Flexible perovskite solar cells (f‐PSCs) show great promise in portable‐power applications (e.g., chargers, drones) and low‐cost, scalable productions roll‐to‐roll). However, conventional n–i–p architecture f‐PSCs, the low‐temperature processed metal oxide electron transport layers (ETLs) usually suffer from high resistance severe defects that limit power conversion efficiency (PCE) improvement of f‐PSCs. Besides enhancement mobility passivation for perovskite/ETL interfacial reported previous literature, herein, loss between nanocrystallines within ETL is studied by introducing an amorphous F‐doped TiO x (F‐TiO ) caulked crystalline SnO 2 composite ETL. The F‐TiO this novel acts as interstitial medium adjacent nanocrystallines, which can provide more channels, effectively passivate oxygen vacancies, optimize energy level arrangement, thus significantly enhancing reducing charge losses. ETL‐based f‐PSCs achieve a PCE 22.70% good operational stability. Furthermore, moderate roughness endows with superior mechanical reliability virtue strong coupling at ETL/perovskite interface, maintain 82.11% their initial after 4000 bending cycles.

Language: Английский

Tailoring passivators for highly efficient and stable perovskite solar cells DOI
Hong Zhang, Lukas Pfeifer, Shaik M. Zakeeruddin

et al.

Nature Reviews Chemistry, Journal Year: 2023, Volume and Issue: 7(9), P. 632 - 652

Published: July 18, 2023

Language: Английский

Citations

206
Perovskite Grain‐Boundary Manipulation Using Room‐Temperature Dynamic Self‐Healing “Ligaments” for Developing Highly Stable Flexible Perovskite Solar Cells with 23.8% Efficiency DOI
Ziyuan Chen,

Qinrong Cheng,

Haiyang Chen

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(18)

Published: Feb. 17, 2023

Flexible perovskite solar cells (pero-SCs) are the best candidates to complement traditional silicon SCs in portable power applications. However, their mechanical, operational, and ambient stabilities still unable meet practical demands because of natural brittleness, residual tensile strain, high defect density along grain boundaries. To overcome these issues, a cross-linkable monomer TA-NI with dynamic covalent disulfide bonds, H-bonds, ammonium is carefully developed. The cross-linking acts as "ligaments" attached on These consisting elastomers 1D perovskites can not only passivate boundaries enhance moisture resistance but also release strain mechanical stress 3D films. More importantly, elastomer repair bending-induced cracks film self-healing characteristics. resultant flexible pero-SCs exhibit promising improvements efficiency, record values (23.84% 21.66%) obtained for 0.062 1.004 cm2 devices; devices show overall improved T90 >20 000 bending cycles, operational stability >1248 h, (relative humidity = 30%) >3000 h. This strategy paves new way industrial-scale development high-performance pero-SCs.

Language: Английский

Citations

111
Molecular dipole engineering-assisted strain release for mechanically robust flexible perovskite solar cells DOI

Lisha Xie,

Songyu Du,

Jun Li

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(11), P. 5423 - 5433

Published: Jan. 1, 2023

–CN additives are used to sew defects at perovskite grain boundaries and release GB stresses, resulting in low Young's modulus & high mechanical flexibility. Furthermore, 2F-2CN with a stronger molecular dipole enhances the efficiency stability of inverted f-PSCs, yielding exceptional efficiency.

Language: Английский

Citations

98
Backbone Engineering Enables Highly Efficient Polymer Hole‐Transporting Materials for Inverted Perovskite Solar Cells DOI
Xin Wu, Danpeng Gao, Xianglang Sun

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(12)

Published: Dec. 31, 2022

The interface and crystallinity of perovskite films play a decisive role in determining the device performance, which is significantly influenced by bottom hole-transporting material (HTM) inverted solar cells (PVSCs). Herein, simple design strategy polymer HTMs reported, can modulate wettability promote anchoring introducing pyridine units into polyarylamine backbone, so as to realize efficient stable PVSCs. HTM properties be effectively modified varying linkage sites units, 3,5-linked PTAA-P1 particularly demonstrates more regulated molecular configuration for interacting with perovskites, leading highly crystalline uniform back contact reduced defect density. Dopant-free PTAA-P1-based PVSCs have realized remarkable efficiencies 24.89% (certified value: 24.50%) small-area (0.08 cm2 ) well 23.12% large-area (1 devices. Moreover, unencapsulated maintains over 93% its initial efficiency after 800 h maximum power point tracking under simulated AM 1.5G illumination.

Language: Английский

Citations

79
Optimizing the Buried Interface in Flexible Perovskite Solar Cells to Achieve Over 24% Efficiency and Long‐Term Stability DOI

Ruoyao Xu,

Fang Pan,

Jinyu Chen

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(7)

Published: Oct. 7, 2023

The buried interface of the perovskite layer has a profound influence on its film morphology, defect formation, and aging resistance from outset, therefore, significantly affects quality device performance derived solar cells. Especially for FAPbI

Language: Английский

Citations

76
Minimized Energy Loss at the Buried Interface of p‐i‐n Perovskite Solar Cells via Accelerating Charge Transfer and Forming p–n Homojunction DOI
Jiankai Zhang, Bo Yu, Yapeng Sun

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(19)

Published: April 7, 2023

Abstract The energy loss ( E ) aroused by inefficient charge transfer and large level offset at the buried interface of p‐i‐n perovskite solar cells (PVSCs) limits their development. In this work, a BF 4 − anion‐assisted molecular doping (AMD) strategy is first proposed to improve capability hole transport layers (HTLs) reduce PVSCs. AMD improves carrier mobility density poly[bis(4‐phenyl) (2,4,6‐trimethylphenyl) amine] (PTAA) poly[ N , ′‐bis(4‐butilphenyl)‐ ′‐bis(phenyl)‐benzidine] (Poly‐TPD) HTLs while lowering Fermi levels. Meanwhile, BF4− anions regulate crystallization donor‐type iodine vacancies, resulting in energetics transformation from n‐type p‐type on bottom surface film. faster formed p–n homojunction recombination HTL/perovskite interface. PVSCs utilizing treated PTAA Poly‐TPD as demonstrate highest power conversion efficiency (PCE) 24.26% 22.65%, along with retaining 90.97% 85.95% initial PCE after maximum point tracking for 400 h. This work provides an effective way minimize accelerating forming homojunctions.

Language: Английский

Citations

66
Fundamental understanding of stability for halide perovskite photovoltaics: The importance of interfaces DOI Creative Commons
Bo Li, Shuai Li, Jianqiu Gong

et al.

Chem, Journal Year: 2023, Volume and Issue: 10(1), P. 35 - 47

Published: Sept. 29, 2023

Language: Английский

Citations

56
Strain Regulation via Pseudo Halide‐Based Ionic Liquid toward Efficient and Stable α‐FAPbI3 Inverted Perovskite Solar Cells DOI

Xiaofen Jiang,

Xue Wang, Xin Wu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(23)

Published: May 1, 2023

Abstract Inverted (p‐i‐n) perovskite solar cells have drawn great attention due to their outstanding stability and low‐temperature processibility. However, power conversion efficiency (PCE) still lags behind conventional (n‐i‐p) devices mainly the lack of strategies stabilize α ‐FAPbI 3 without changing bandgap. In this work, a facile effective strategy is reported regulate residual strain via pseudo halide‐based ionic liquids incorporation in inverted (PVSCs). The employment methylamine formate (MAFa) liquid enables homogenously stronger compressive restrain transition shared‐corner PbI 6 octahedron into shared‐face δ , as well affecting dynamic behavior carriers defects achieve record PCE (24.08%) among FAPbI up now. addition, MAFa results enhanced device stability, unencapsulated PVSC retains over 90% its initial after stored ambient environment (RH:30 ± 5%) for 1000 h. This work provides an efficient realize stable based PVSCs further catch with ones.

Language: Английский

Citations

51
Strategies for Improving Efficiency and Stability of Inverted Perovskite Solar Cells DOI
Wenxiao Zhang, Xuemin Guo,

Zhengbo Cui

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(37)

Published: March 1, 2024

Abstract Perovskite solar cells (PSCs) have attracted widespread research and commercialization attention because of their high power conversion efficiency (PCE) low fabrication cost. The long‐term stability PSCs should satisfy industrial requirements for photovoltaic devices. Inverted with a p‐i‐n architecture exhibit considerable advantages excellent competitive efficiency. continuously broken‐through PCE inverted shows huge application potential. This review summarizes the developments outlines characteristics including charge transport layers (CTLs), perovskite compositions, interfacial regulation strategies. latest effective CTLs, modification, promotion strategies especially under light, thermal, bias conditions are emphatically analyzed. Furthermore, applications structure in high‐efficiency stable tandem, flexible devices, modules main obstacles systematically introduced. Finally, remaining challenges faced by devices discussed, several directions advancing proposed according to development status industrialization requirements.

Language: Английский

Citations

49
Porous Lead Iodide Layer Promotes Organic Amine Salt Diffusion to Achieve High Performance p‐i‐n Flexible Perovskite Solar Cells DOI Open Access
Qing Sun,

Shaocong Duan,

Gang Liu

et al.

Advanced Energy Materials, Journal Year: 2023, Volume and Issue: 13(36)

Published: Aug. 8, 2023

Abstract Flexible perovskite solar cells (FPSCs) are attracting widespread research and attention for their benefits as the next‐generation wearable electronic products. However, there still many challenges in quest to achieve dense, pinhole‐free, high crystal quality, low defect, stable films, which limit further improvement efficiency stability of FPSCs. Herein, a novel technique incorporation quaternary ammonium halide (QAH) additives prepare fluffy porous lead iodide layers by using two‐step sequential deposition method, is reported. Benefiting from good diffusion organic amine salts on PbI 2 layers, flat dense films produced with large particle sizes, few defects, quality. Finally, champion rigid flexible p‐i‐n PSCs 2‐(acetyloxy)‐N,N,N‐trimethylethanium chloride (AtaCl) additive achieves exciting power conversion efficiencies (PCE) 23.40% 21.10%, respectively. The device AtaCl retains over 90% its original PCE under ambient conditions (40 ± 5% relative humidity (RH)) 1000 h aging without encapsulation. In addition, shows excellent mechanical bending conditions, retaining ≈85% after 10 000 cycles (bending radius = 5 mm).

Language: Английский

Citations

47