Retarding solid-state reactions enable efficient and stable all-inorganic perovskite solar cells and modules DOI Creative Commons
Cheng Liu,

Xiuhong Sun,

Yi Yang

et al.

Science Advances, Journal Year: 2023, Volume and Issue: 9(21)

Published: May 26, 2023

All-inorganic CsPbI3 perovskite solar cells (PSCs) with efficiencies exceeding 20% are ideal candidates for application in large-scale tandem cells. However, there still two major obstacles hindering their scale-up: (i) the inhomogeneous solid-state synthesis process and (ii) inferior stability of photoactive black phase. Here, we have used a thermally stable ionic liquid, bis(triphenylphosphine)iminium bis(trifluoromethylsulfonyl)imide ([PPN][TFSI]), to retard high-temperature reaction between Cs4PbI6 DMAPbI3 [dimethylammonium (DMA)], which enables preparation high-quality large-area films air. Because strong Pb-O contacts, [PPN][TFSI] increases formation energy superficial vacancies prevents undesired phase degradation CsPbI3. The resulting PSCs attained power conversion efficiency (PCE) 20.64% (certified 19.69%) long-term operational over 1000 hours. A record 16.89% an all-inorganic module was achieved, active area 28.17 cm2.

Language: Английский

Ion–Dipole Interaction Enabling Highly Efficient CsPbI3 Perovskite Indoor Photovoltaics DOI
Kai‐Li Wang, Haizhou Lu, Meng Li

et al.

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

Published: June 8, 2023

Abstract Metal halide perovskites are ideal candidates for indoor photovoltaics (IPVs) because of their easy‐to‐adjust bandgaps, which can be designed to cover the spectrum any artificial light source. However, serious non‐radiative carrier recombination under low illumination restrains application perovskite‐based IPVs (PIPVs). Herein, polar molecules amino naphthalene sulfonates employed functionalize TiO 2 substrate, anchoring CsPbI 3 perovskite crystal grains with a strong ion–dipole interaction between molecule‐level interlayer and ionic film. The resulting high‐quality films merit defect‐immunity large shunt resistance conditions enable corresponding PIPVs an power conversion efficiency up 41.2% ( P in : 334.11 µW cm −2 , out 137.66 ) from commonly used light‐emitting diode source (2956 K, 1062 lux). Furthermore, device also achieves efficiencies 29.45% 9.80 32.54% 54.34 at 106 33.84 522 lux 168.21 ), respectively.

Language: Английский

Citations

39
Advances in Optical Imaging and Optical Communications Based on High‐Quality Halide Perovskite Photodetectors DOI Creative Commons
Daming Zheng, Thierry Pauporté

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 34(11)

Published: Nov. 27, 2023

Abstract Metal halide perovskites are widely used in the preparation of photodetectors (PDs) due to their excellent photoelectric properties, tunable band gap, low cost, and rapid processing solutions. Although 3D perovskite PDs exhibit exceptional performance, practical applications limited instability issues. Conversely, 2D gaining popularity superior environmental stability. To produce efficient stable perovskite‐based PDs, it is crucial control film formation process achieve high‐quality films. This paper examines impacts crystallinity on properties presents important observations regarding crystallization phase dynamics that occur during formation. These insights have implications design high‐performance metal photodetectors, particularly domains optical communications imaging. They offer valuable guidance for next researchers developers seeking improve functionality marketability using

Language: Английский

Citations

39
Synergetic Excess PbI2 and Reduced Pb Leakage Management Strategy for 24.28% Efficient, Stable and Eco‐Friendly Perovskite Solar Cells DOI
Yuhong Zhang, Lin Xu, Yanjie Wu

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(17)

Published: Feb. 2, 2023

Abstract Introducing excess PbI 2 has proven to be an effective in situ passivation strategy for enhancing efficiency of perovskite solar cells (PSCs). Nevertheless, the photoinstability and hysteresis are still tough issues owing photolysis nature . Moreover, humidity‐related degradation films is also a difficult territory cover such strategy. Herein, synergistic reported via initiatively inducing vertical graded distribution (GPD) whole film capping cis ‐Ru(H dcbpy)(dnbpy)(NCS) (Z907) internal encapsulation (IE) layer on surface ameliorate above issues. The GPD design can enhance luminescence, prolong carrier lifetimes, ascertaining improvement elimination PSCs. Besides, introduced IE not only promote moisture thermal resistance, but inhibit Pb leakage ion migration Through synergetic regulations, resultant PSCs exhibit impressive open circuit voltage ( V OC ) 1.253 V, fill factor 81.25%, power conversion (PCE) 24.28%. maintain 91% its initial PCE at relative humidity 85% after 500 h aging 94% under continuous heating 85 °C 750 aging.

Language: Английский

Citations

35
Efficient Inorganic Vapor‐Assisted Defects Passivation for Perovskite Solar Module DOI
Kun Zhang, Yang Wang,

Mingquan Tao

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(22)

Published: March 2, 2023

Surface trap as intrinsic defects-mediated non-radiative charge recombination is a major obstacle to achieving the reliable fabrication of high-efficiency and large-area perovskite photovoltaics. Here CS2 vapor-assisted passivation strategy proposed for solar module, aiming passivate iodine vacancy uncoordinated Pb2+ caused by ion migration. Significantly, this method can avoid disadvantages inhomogeneity film spin-coating-assisted reconstruction surface from solvent. The vapor passivated device presents higher defect formation energy (0.54 eV) than pristine (0.37 eV), while bonded with . shallow level has obviously enhanced efficiencies (25.20% 0.08 cm2 20.66% 40.6 ) stability, exhibiting an average T80 -lifetime 1040 h working at maximum power point, maintaining over 90% initial efficiency after 2000 RH = 30% 30 °C.

Language: Английский

Citations

33
Retarding solid-state reactions enable efficient and stable all-inorganic perovskite solar cells and modules DOI Creative Commons
Cheng Liu,

Xiuhong Sun,

Yi Yang

et al.

Science Advances, Journal Year: 2023, Volume and Issue: 9(21)

Published: May 26, 2023

All-inorganic CsPbI3 perovskite solar cells (PSCs) with efficiencies exceeding 20% are ideal candidates for application in large-scale tandem cells. However, there still two major obstacles hindering their scale-up: (i) the inhomogeneous solid-state synthesis process and (ii) inferior stability of photoactive black phase. Here, we have used a thermally stable ionic liquid, bis(triphenylphosphine)iminium bis(trifluoromethylsulfonyl)imide ([PPN][TFSI]), to retard high-temperature reaction between Cs4PbI6 DMAPbI3 [dimethylammonium (DMA)], which enables preparation high-quality large-area films air. Because strong Pb-O contacts, [PPN][TFSI] increases formation energy superficial vacancies prevents undesired phase degradation CsPbI3. The resulting PSCs attained power conversion efficiency (PCE) 20.64% (certified 19.69%) long-term operational over 1000 hours. A record 16.89% an all-inorganic module was achieved, active area 28.17 cm2.

Language: Английский

Citations

29