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In situ laser generation of NiOX nanoparticles embedded in graphene flakes for ambient-processed hole-transport-layer-free perovskite solar cells
被引:4
|作者:
Wang, Dong
[1
]
Chen, Qian
[1
]
Mo, Hongbo
[2
]
Cheng, Dongxu
[2
]
Liu, Xuzhao
[1
,3
]
Liu, Wen
[1
]
Jacobs, Janet
[3
,4
]
Thomas, Andrew G.
[1
,3
]
Liu, Zhu
[1
,5
]
Curry, Richard J.
[3
,4
]
机构:
[1] Univ Manchester, Dept Mat, Oxford Rd, Manchester M13 9PL, England
[2] Univ Manchester, Dept Mech Aerosp & Civil Engn, Oxford Rd, Manchester M13 9PL, England
[3] Univ Manchester, Photon Sci Inst, Dept Elect & Elect Engn, Oxford Rd, Manchester M13 9PL, England
[4] Univ Manchester, Henry Royce Inst, Oxford Rd, Manchester M13 9PL, England
[5] Chinese Acad Sci, Ningbo Inst Mat Engn & Technol, Res Ctr Laser Extreme Mfg, Ningbo, Peoples R China
来源:
基金:
英国工程与自然科学研究理事会;
关键词:
Laser-induced graphene;
Graphene electrode;
Nickel oxide;
Nanoparticles;
Hole-transport-layer-free perovskite solar cells;
CONDUCTOR-FREE;
CARBON ELECTRODE;
WORK FUNCTION;
PERFORMANCE;
METAL;
NANOTUBE;
GOLD;
D O I:
10.1016/j.carbon.2023.118360
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Carbon-based hole-transport-layer-free perovskite solar cells (HTL-free C-PSCs) have gained tremendous attention due to their low cost, ease of fabrication, low-temperature processability, and excellent long-term stability. However, HTL-free C-PSCs suffer from poor interfacial contact at the carbon/perovskite and limited hole extraction ability, thereby limiting the device's performance. Herein, an in situ one-step synthesis strategy is presented to simultaneously generate laser-induced graphene flakes (LIG) embedded with the uniformly distributed fine NiOX nanoparticles (LIG@NiOX) as the electrode for HTL-free C-PSCs. Due to the desired morphology of the LIG flakes, it enables the formation of a compact LIG@NiOX electrode without a post-heat treatment or hot-pressing process. As a result, the fully ambient-processed HTL-free C-PSCs prepared under a high relative humidity of around 50-70% based on the LIG@NiOX achieve a power conversion efficiency (PCE) of up to 14.46%, compared to a PCE of 10.36% for the PSCs based on the commercial graphite/carbon black. This is due to a remarkable improvement in the physical contact at the carbon/perovskite interface using LIG@NiOX. Moreover, the PSCs based on LIG@NiOX retained 94% of their initial PCEs after 185 days of storage in ambient air, compared to those based on the Spiro-OMeTAD/Au that only retained 78% of their initial PCEs after 84 days of storage under the same ambient condition. The laser process opens a new avenue for simultaneous forming LIG embedded with the in situ formed metal oxide nanoparticles for various applications.
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页数:14
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