A 0D Additive for Flexible All‐Inorganic Perovskite Solar Cells to Go Beyond 60 000 Flexible Cycles DOI
Huijing Liu,

Huifang Han,

Jia Xu

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(28)

Published: April 19, 2023

Abstract All‐inorganic cesium lead halide flexible perovskite solar cells (f‐PSCs) exhibit superior thermal stability compared to their organic–inorganic hybrid counterparts. However, flexibility and efficiency are still below‐par for practical viability. Herein, a design using 0D Cs 4 Pb(IBr) 6 additive transform tensile stress into compressive in the film, effectively preventing expansion of cracks significantly improved mechanical durability, is reported. It found that not only obtained, but also cell increased all‐inorganic 3D CsPbI 3− x Br cells. The 2.81 0.19 f‐PSC retains over 97% its initial even after 60 000 flexing cycles at curvature radius 5 mm ( R = mm). Simultaneously, enhances crystallinity film passivates defects along grain boundaries, improving photovoltaic performance f‐PSCs. highest power‐conversion obtained 14.25% with short‐circuit current density 18.47 mA cm −2 , open‐circuit voltage 1.09 V, fill factor 70.67%. This strategy paves way further improvement durability

Language: Английский

Inorganic wide-bandgap perovskite subcells with dipole bridge for all-perovskite tandems DOI
Tiantian Li, Jian Xu, Renxing Lin

et al.

Nature Energy, Journal Year: 2023, Volume and Issue: 8(6), P. 610 - 620

Published: April 13, 2023

Language: Английский

Citations

201
21.15%‐Efficiency and Stable γ ‐CsPbI3 Perovskite Solar Cells Enabled by an Acyloin Ligand DOI
Jungang Wang, Yuhang Che, Yuwei Duan

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(12)

Published: Jan. 9, 2023

Cesium lead triiodide (CsPbI3 ) is a promising light-absorbing material for constructing perovskite solar cells (PSCs) owing to its favorable bandgap and thermal tolerance. However, the high density of defects in CsPbI3 film not only act as recombination centers, but also facilitate ion migration, leading lower PCE inferior stability compared with state-of-the-art organic-inorganic hybrid PSC counterpart. Theoretical analyses suggest that effective suppression helpful improving device performance. Herein, stable efficient γ -CsPbI3 PSCs are demonstrated by developing an acyloin ligand (1,2-di(thiophen-2-yl)ethane-1,2-dione (DED)) phase stabilizer defect passivator. The experiment calculation results confirm carbonyl thienyl DED can synergistically interact forming chelate effectively passivate Pb-related further suppress migration. Consequently, DED-treated yield champion 21.15%, which one highest among all reported date. In addition, unencapsulated DED-CsPbI3 retain 94.9% itsinitial when stored under ambient conditions 1000 h 92.8% initial constant illumination 250 h.

Language: Английский

Citations

131
Interface Modification for Efficient and Stable Inverted Inorganic Perovskite Solar Cells DOI
Tianfei Xu, Wanchun Xiang,

Junjie Yang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(31)

Published: June 7, 2023

Due to their excellent thermal stability and ideal bandgap, metal halide inorganic perovskite based solar cells (PSCs) with inverted structure are considered as an choice for perovskite/silicon tandem cells. However, the power conversion efficiency (PCE) of still lags far behind that conventional n-i-p PSCs due interfacial energy level mismatch high nonradiative charge recombination. Herein, performance is significantly improved by engineering CsPbI3-x Brx films 2-mercapto-1-methylimidazole (MMI). It found mercapto group can preferably react undercoordinated Pb2+ from forming Pb-S bonds, which appreciably reduces surface trap density. Moreover, MMI modification results in a better alignment electron-transporting material, promoting carrier transfer reducing voltage deficit. The above combination open-circuit enhancement 120 mV, yielding champion PCE 20.6% 0.09 cm2 area 17.3% 1 area. Furthermore, ambient, operational heat stabilities also greatly improved. work demonstrates simple but effective approach fabricating highly efficient stable PSCs.

Language: Английский

Citations

81
Pushing the Limit of Open‐Circuit Voltage Deficit via Modifying Buried Interface in CsPbI3 Perovskite Solar Cells DOI

Chenzhe Xu,

Suicai Zhang,

Wenqiang Fan

et al.

Advanced Materials, Journal Year: 2022, Volume and Issue: 35(7)

Published: Nov. 19, 2022

Although CsPbI3 perovskites have shown tremendous potential in the photovoltaic field owing to their excellent thermal stability, device performance is seriously restricted by severe photovoltage loss. The buried titanium oxide/perovskite interface plays a critical role interfacial charge transport and perovskite crystallization, which closely related open-circuit voltage deficit stemming from nonradiative recombination. Herein, target molecules named 3-sulphonatopropyl acrylate potassium salts are deliberately employed with special functional groups for modifying interface, giving rise favorable functions terms of passivating defects, optimizing energetic alignment, facilitating crystallization. Experimental characterizations theoretical calculations reveal that modification inhibits electron transfer barrier simultaneously improves crystal quality, thereby reducing trap-assisted recombination Consequently, omnibearing regarding endows devices an impressive efficiency 20.98%, achieving record-low VOC 0.451 V. as-proposed strategy renders universal prescription push limit deficit, showing promising future developing high-performance all-inorganic photovoltaics.

Language: Английский

Citations

78
Surface n-type band bending for stable inverted CsPbI3perovskite solar cells with over 20% efficiency DOI
Shuo Wang, Minghua Li, Yanyan Zhang

et al.

Energy & Environmental Science, Journal Year: 2023, Volume and Issue: 16(6), P. 2572 - 2578

Published: Jan. 1, 2023

Inverted CsPbI 3 perovskite solar cells offer merits for tandem and indoor photovoltaics.

Language: Английский

Citations

67
Mixed‐Halide Inorganic Perovskite Solar Cells: Opportunities and Challenges DOI
Ming Yang, Huaxin Wang, Wensi Cai

et al.

Advanced Optical Materials, Journal Year: 2023, Volume and Issue: 11(20)

Published: Aug. 23, 2023

Abstract Recently, mixed‐halide inorganic CsPbI 3− x Br perovskite solar cells (PSCs) have had a rapid advancement, which offers balanced efficiency, stability, tunable bandgap, and potential for indoor photovoltaic applications. Despite these advantages, significant challenges remain in the phase segregation phenomena, trap state density, absorption range limitations. This review presents an analysis of crystal electronic structure optical properties , as well in‐depth look at high‐quality film preparation, inhibition solutions, interface engineering, highlighting critical role modification performance PSCs. Furthermore, how PSCs can be strong candidates photovoltaics because their adjustable bandgap that enables them to better match notable strength stability is discussed. Finally, provides perspectives address development bottlenecks inspires future research prospects concerning

Language: Английский

Citations

61
Constructing an Interfacial Gradient Heterostructure Enables Efficient CsPbI3 Perovskite Solar Cells and Printed Minimodules DOI

Shan Tan,

Chengyu Tan,

Yuqi Cui

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(28)

Published: April 6, 2023

Abstract Severe nonradiative recombination originating from interfacial defects together with the pervasive energy level mismatch at interface remarkably limits performance of CsPbI 3 perovskite solar cells (PSCs). These issues need to be addressed urgently for high‐performance and their applications. Herein, an gradient heterostructure based on low‐temperature post‐treatment quaternary bromide salts efficient PSCs impressive efficiency 21.31% extraordinary fill factor 0.854 is demonstrated. Further investigation reveals that Br − ions diffuse into films heal undercoordinated Pb 2+ inhibit cluster formation, thus suppressing in . Meanwhile, a more compatible alignment resulting distribution organic cations surface termination also achieved, hence promoting charge separation collection. Consequently, printed small‐size cell 20.28% 12 cm 2 minimodules record 16.60% are Moreover, unencapsulated devices exhibit superior stability.

Language: Английский

Citations

52
Interface Modification for Energy Level Alignment and Charge Extraction in CsPbI3 Perovskite Solar Cells DOI Creative Commons
Zafar Iqbal, Fengshuo Zu, Artem Musiienko

et al.

ACS Energy Letters, Journal Year: 2023, Volume and Issue: 8(10), P. 4304 - 4314

Published: Sept. 22, 2023

In perovskite solar cells (PSCs) energy level alignment and charge extraction at the interfaces are essential factors directly affecting device performance. this work, we present a modified interface between all-inorganic CsPbI3 its hole-selective contact (spiro-OMeTAD), realized by dipole molecule trioctylphosphine oxide (TOPO), to align levels. On passivated film, with n-octylammonium iodide (OAI), created an upward surface band-bending TOPO treatment. This improved induces better enhances of holes from layer hole transport material. Consequently, Voc 1.2 V high-power conversion efficiency (PCE) over 19% were achieved for inorganic cells. Further, demonstrate effect molecule, layer-by-layer study transient photovoltage (trSPV) technique accomplished simulation.

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

51
Stabilizing CsPbI3 perovskite for photovoltaic applications DOI

Xue Tan,

Shubin Wang, Qixian Zhang

et al.

Matter, Journal Year: 2023, Volume and Issue: 6(3), P. 691 - 727

Published: Jan. 12, 2023

Language: Английский

Citations

50