17% efficient printable mesoscopic PIN metal oxide framework perovskite solar cells using cesium-containing triple cation perovskite

Liu, Shuangshuang; Huang, Wenchao; Liao, Peizhe; Pootrakulchote, Nuttapol; Li, Hao; Lu, Jianfeng; Li, Junpeng; Huang, Feihong; Shai, Xuxia; Zhao, Xiaojuan; Shen, Yan; Cheng, Yi‐Bing; Wang, Mingkui

doi:10.1039/c7ta07660f

Cited by 127 publications

(113 citation statements)

References 42 publications

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“…A comparison with PL measurements on perovskite layers inkjet printed on glass (Figure S6, Supporting Information) suggests that while quenching at the NiO x interface is an observable effect, it is not the dominant mechanism behind the change of lifetime constant τ 2 . It should be highlighted that the charge carrier lifetime constant in the thicker perovskite thin films (1100–2000 dpi) is in the range of 0.5–1 µs, which is a truly remarkable value in view of lifetimes reported previously for multicrystalline perovskite thin films (up to values of 480 ns for triple‐cation perovskites, including determination with a two‐term exponential fit) and proving the exceptional optoelectronic quality of printed perovskite films presented in this work.…”

Section: Resultssupporting

confidence: 68%

“…A two‐term exponential fit (see the Experimental Section for details) was used to determine a mixed time constant τ 1 and a charge carrier lifetime constant τ 2 as decay constants of time‐resolved PL on perovskite thin films on glass/ITO/NiO x ( Figure 6 ). While the charge extraction time constant is similar for all samples, layers printed with higher resolutions (especially 1100 dpi and more) display significantly longer charge carrier lifetime constants, emphasizing the excellent optoelectronic quality. This is attributed to the formation of large columnar grains extending over the entire thin film thickness, minimizing the influence of crystal domain grain boundaries that are prone to recombination centers and nonradiative recombination.…”

Section: Resultsmentioning

confidence: 84%

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Inkjet‐Printed Micrometer‐Thick Perovskite Solar Cells with Large Columnar Grains

Eggers

Schackmar

Abzieher

et al. 2019

Advanced Energy Materials

153

167

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Transferring the high power conversion efficiencies (PCEs) of spin‐coated perovskite solar cells (PSCs) on the laboratory scale to large‐area photovoltaic modules requires a significant advance in scalable fabrication methods. Digital inkjet printing promises scalable, material, and cost‐efficient deposition of perovskite thin films on a wide range of substrates and in arbitrary shapes. In this work, high‐quality inkjet‐printed triple‐cation (methylammonium, formamidinium, and cesium) perovskite layers with exceptional thicknesses of >1 µm are demonstrated, enabling unprecedentedly high PCEs > 21% and stabilized power output efficiencies > 18% for inkjet‐printed PSCs. In‐depth characterization shows that the thick inkjet‐printed perovskite thin films deposited using the process developed herein exhibit a columnar crystal structure, free of horizontal grain boundaries, which extend over the entire thickness. A thin film thickness of around 1.5 µm is determined as optimal for PSC for this process. Up to this layer thickness X‐ray photoemission spectroscopy analysis confirms the expected stoichiometric perovskite composition at the surface and shows strong deviations and inhomogeneities for thicker thin films. The micrometer‐thick perovskite thin films exhibit remarkably long charge carrier lifetimes, highlighting their excellent optoelectronic characteristics. They are particularly promising for next‐generation inkjet‐printed perovskite solar cells, photodetectors, and X‐ray detectors.

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Section: Resultssupporting

confidence: 68%

Section: Resultsmentioning

confidence: 84%

Inkjet‐Printed Micrometer‐Thick Perovskite Solar Cells with Large Columnar Grains

Eggers

Schackmar

Abzieher

et al. 2019

Advanced Energy Materials

153

167

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“…The nano‐Au/PSCs exhibited a high PCE of 18.7% (19.0%) with a high open‐circuit voltage ( V OC ) of 1.17 V (1.16 V), a J sc of 21.5 mA cm −2 (21.5 mA cm −2 ), and a fill factor (FF) of 74.3% (76.0%), as measured at forward (reverse) scanning. These results were nearly comparable to the highest efficiency carbon‐based PSCs fabricated by complicated and multistep preparation processes and were much better than those of the monolithic structure of porous Ni and Au electrodes in PSCs produced using a complicated fabrication procedure . We evaluated the stabilized power output (SPO) of nano‐Au/PSCs with a bias voltage of 1.0 V under the maximum power point (MPP), as shown in Figure 2b.…”

Section: Resultsmentioning

confidence: 66%

“…Note that the nanoporous Au film was in tight contact with the HTL after a simple dry transfer process was conducted and without requiring vacuum thermal deposition. The film was also much improved over that derived from carbon‐based electrode stacking . The thickness of the nanoporous Au was ≈95 nm, as estimated from the cross‐sectional SEM image.…”

Section: Resultsmentioning

confidence: 89%

Recycled Utilization of a Nanoporous Au Electrode for Reduced Fabrication Cost of Perovskite Solar Cells

et al. 2020

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Perovskite solar cells (PSCs) using metal electrodes have been regarded as promising candidates for next‐generation photovoltaic devices because of their high efficiency, low fabrication temperature, and low cost potential. However, the complicated and rigorous thermal deposition process of metal contact electrodes remains a challenging issue for reducing the energy pay‐back period in commercial PSCs, as the ubiquitous one‐time use of a contact electrode wastes limited resources and pollutes the environment. Here, a nanoporous Au film electrode fabricated by a simple dry transfer process is introduced to replace the thermally evaporated Au electrode in PSCs. A high power conversion efficiency (PCE) of 19.0% is demonstrated in PSCs with the nanoporous Au film electrode. Moreover, the electrode is recycled more than 12 times to realize a further reduced fabrication cost of PSCs and noble metal materials consumption and to prevent environmental pollution. When the nanoporous Au electrode is applied to flexible PSCs, a PCE of 17.3% and superior bending durability of ≈98.5% after 1000 cycles of harsh bending tests are achieved. The nanoscale pores and the capability of the porous structure to impede crack generation and propagation enable the nanoporous Au electrode to be recycled and result in excellent bending durability.

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“…An efficient PSC was prepared according to our previous work by using Cs 0.05 (FA 0.4 MA 0.6 ) 0.95 PbI 2.8 Br 0.2 as the absorber in combination with the TiO 2 /Al 2 O 3 /NiO inorganic metal oxide framework, and ac arbon counter electrode (Figure 5c). [48] The corresponding j--V characteristics of ar epresentative PSC under simulated AM 1.5G solar irradiation is shown in Figure 5d.T he solar cell exhibits ah igh PCE of 15.7 %w ith a short-circuit photocurrent density of 23.3 mA cm À2 ,open-circuit voltage of 0.95 V, af ill factor of 0.71, and al ong-term stability. This signifies that only as ingle as-prepared PSC is enought o drive the reformed electrolyzer for hydrogen production.…”

Section: Resultsmentioning

confidence: 99%

Highly Efficient Hydrogen Production Using a Reformed Electrolysis System Driven by a Single Perovskite Solar Cell

et al. 2019

Self Cite

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Efficient hydrogen production by a photovoltaic‐electrolysis cell (PV–EC) system requires a low electrolyzer overpotential and a high coupling efficiency between both the components. Herein, Ni5P4 is proposed as a cost‐effective bifunctional electrocatalyst for hydrogen evolution and hydrazine oxidation in a reformed electrolyzer. Experiments indicate that the electrolytic overpotential could be significantly reduced by replacing the oxygen evolution reaction with the hydrazine oxidation reaction at the anode. Furthermore, a scenario for hydrogen production is demonstrated by utilizing a stable and low‐cost perovskite solar cell (PSC) with a carbon back electrode to drive a reformed electrolyzer. Importantly, a single PSC can drive three reformed electrolyzers in series for hydrogen production by carefully matching the operating point of the electrolyzer with the maximum power point of the photovoltaic device, thereby, yielding a H2 evolution rate of 1.77 mg h−1 for the whole PV–EC system. This can be a potential starting point for hydrogen production using a single PSC‐driven electrolysis system.

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17% efficient printable mesoscopic PIN metal oxide framework perovskite solar cells using cesium-containing triple cation perovskite

Abstract: Cs0.05(FA0.4MA0.6)0.95PbI2.8Br0.2 based devices showed an impressive efficiency of 17.02% and excellent thermal stability with long electron and hole diffusion lengths.

Cited by 127 publications

References 42 publications

Inkjet‐Printed Micrometer‐Thick Perovskite Solar Cells with Large Columnar Grains

Inkjet‐Printed Micrometer‐Thick Perovskite Solar Cells with Large Columnar Grains

Recycled Utilization of a Nanoporous Au Electrode for Reduced Fabrication Cost of Perovskite Solar Cells

Highly Efficient Hydrogen Production Using a Reformed Electrolysis System Driven by a Single Perovskite Solar Cell

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