Facile and Scalable Fabrication of Highly Efficient Lead Iodide Perovskite Thin-Film Solar Cells in Air Using Gas Pump Method

Ding, Bin; Gao, Lili; Liang, Lusheng; Chu, Qian-Qian; Song, Xiao-Xuan; Li, Yan; Yang, Guan-Jun; Fan, Bin; Wang, Mingkui

doi:10.1021/acsami.6b05862

Cited by 89 publications

(75 citation statements)

References 42 publications

(55 reference statements)

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“…Before each perovskite film was prepared, the precursor solution was filtered using a polytetrafluoroethylene filter with a pore size of 0.22 μm. The solution was then dropped on the substrate and spin coating at 4000 rpm for 10 s; it was subsequently dried using a gas pump method57. All the processes were performed in atmosphere without inert gas protection.…”

Section: Methodsmentioning

confidence: 99%

Ultra-high open-circuit voltage of perovskite solar cells induced by nucleation thermodynamics on rough substrates

Ding

Chu

et al. 2017

Sci Rep

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To obtain high performance CH3NH3PbI3 perovskite solar cells, it is highly important to realise a high open-circuit voltage. Calculation results based on a modified diode model have indicated that a low bare ratio ϕ of the perovskite film is the most important factor determining the open-circuit voltage, where ϕ is defined as the ratio of the projection of the uncovered area of the perovskite film to the apparent area of the total substrate surface. To realise a low ϕ, we investigate the nucleation behaviour of crystals on rough substrates. The analysis results predict that, when CH3NH3PbI3 is deposited on conventional transparent conductive oxide substrates such as fluorine-doped tin oxide, preferential heterogeneous nucleation will occur on the concave regions of the substrate; then, depending on the subsequent growth step, full coverage of the perovskite film at both the macroscopic and microscopic scales is realised. As a result, an ultra-high open-circuit voltage, i.e., 1.20 V, can be achieved in devices using the full coverage CH3NH3PbI3 film. The thermodynamics theory of precipitation nucleation should shed light on solution engineering of thin films.

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Section: Methodsmentioning

confidence: 99%

Ultra-high open-circuit voltage of perovskite solar cells induced by nucleation thermodynamics on rough substrates

Ding

Chu

et al. 2017

Sci Rep

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“…Therefore, developing novel preparation methods to achieve high‐quality tin perovskite film is of great importance to boost both efficiency and stability of Sn‐based PSCs. In lead‐based perovskites, the methods for morphology engineering include addition of additives,157, 158, 159 solvent engineering,160, 161 vacuum engineering,162, 163 thermal annealing,164 self‐healing,165 vapor deposition,166 and so on. Herein, the reported methods used for preparing high‐quality tin perovskite layers are introduced.…”

Section: Lead‐free Halide Hybrid Perovskite and Related Absorbersmentioning

confidence: 99%

Lead‐Free Hybrid Perovskite Absorbers for Viable Application: Can We Eat the Cake and Have It too?

2017

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Many years since the booming of research on perovskite solar cells (PSCs), the hybrid perovskite materials developed for photovoltaic application form three main categories since 2009: (i) high‐performance unstable lead‐containing perovskites, (ii) low‐performance lead‐free perovskites, and (iii) moderate performance and stable lead‐containing perovskites. The search for alternative materials to replace lead leads to the second group of perovskite materials. To date, a number of these compounds have been synthesized and applied in photovoltaic devices. Here, lead‐free hybrid light absorbers used in PV devices are focused and their recent developments in related solar cell applications are reviewed comprehensively. In the first part, group 14 metals (Sn and Ge)‐based perovskites are introduced with more emphasis on the optimization of Sn‐based PSCs. Then concerns on halide hybrids of group 15 metals (Bi and Sb) are raised, which are mainly perovskite derivatives. At the same time, transition metal Cu‐based perovskites are also referred. In the end, an outlook is given on the design strategy of lead‐free halide hybrid absorbers for photovoltaic applications. It is believed that this timely review can represent our unique view of the field and shed some light on the direction of development of such promising materials.

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“…[16,17,[21][22][23][24][25] The long-term stability of 3D halide perovskites with organic cations is still an open issue and under intense investigation. [16,17,[21][22][23][24][25] The long-term stability of 3D halide perovskites with organic cations is still an open issue and under intense investigation.…”

mentioning

confidence: 99%

Compositional and Solvent Engineering in Dion–Jacobson 2D Perovskites Boosts Solar Cell Efficiency and Stability

Mao

Stoumpos

et al. 2019

Advanced Energy Materials

227

216

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Hybrid halide 2D perovskites deserve special attention because they exhibit superior environmental stability compared with their 3D analogs. The closer interlayer distance discovered in 2D Dion–Jacobson (DJ) type of halide perovskites relative to 2D Ruddlesden–Popper (RP) perovskites implies better carrier charge transport and superior performance in solar cells. Here, the structure and properties of 2D DJ perovskites employing 3‐(aminomethyl)piperidinium (3AMP2+) as the spacing cation and a mixture of methylammonium (MA+) and formamidinium (FA+) cations in the perovskite cages are presented. Using single‐crystal X‐ray crystallography, it is found that the mixed‐cation (3AMP)(MA0.75FA0.25)3Pb4I13 perovskite has a narrower bandgap, less distorted inorganic framework, and larger PbIPb angles than the single‐cation (3AMP)(MA)3Pb4I13. Furthermore, the (3AMP)(MA0.75FA0.25)3Pb4I13 films made by a solvent‐engineering method with a small amount of hydriodic acid have a much better film morphology and crystalline quality and more preferred perpendicular orientation. As a result, the (3AMP)(MA0.75FA0.25)3Pb4I13‐based solar cells exhibit a champion power conversion efficiency of 12.04% with a high fill factor of 81.04% and a 50% average efficiency improvement compared to the pristine (3AMP)(MA)3Pb4I13 cells. Most importantly, the 2D DJ 3AMP‐based perovskite films and devices show better air and light stability than the 2D RP butylammonium‐based perovskites and their 3D analogs.

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Facile and Scalable Fabrication of Highly Efficient Lead Iodide Perovskite Thin-Film Solar Cells in Air Using Gas Pump Method

Cited by 89 publications

References 42 publications

Ultra-high open-circuit voltage of perovskite solar cells induced by nucleation thermodynamics on rough substrates

Ultra-high open-circuit voltage of perovskite solar cells induced by nucleation thermodynamics on rough substrates

Lead‐Free Hybrid Perovskite Absorbers for Viable Application: Can We Eat the Cake and Have It too?

Compositional and Solvent Engineering in Dion–Jacobson 2D Perovskites Boosts Solar Cell Efficiency and Stability

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