A vacuum flash–assisted solution process for high-efficiency large-area perovskite solar cells

Metal halide perovskite solar cells (PSCs) currently attract enormous research interest because of their high solar-to-electric power conversion efficiency (PCE) and low fabrication costs, but their practical development is hampered by difficulties in achieving high performance with large-size devices. We devised a simple vacuum flash–assisted solution processing method to obtain shiny, smooth, crystalline perovskite films of high electronic quality over large areas. This enabled us to fabricate solar cells with an aperture area exceeding 1 square centimeter, a maximum efficiency of 20.5%, and a certified PCE of 19.6%. By contrast, the best certified PCE to date is 15.6% for PSCs of similar size. We demonstrate that the reproducibility of the method is excellent and that the cells show virtually no hysteresis. Our approach enables the realization of highly efficient large-area PSCs for practical deployment.

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Strategies for High-Performance Large-Area Perovskite Solar Cells toward Commercialization

Crystals ◽

10.3390/cryst11030295 ◽

2021 ◽

Vol 11 (3) ◽

pp. 295

Author(s):

Tianzhao Dai ◽

Qiaojun Cao ◽

Lifeng Yang ◽

Mahmoud Aldamasy ◽

Meng Li ◽

...

Keyword(s):

Solar Cells ◽

High Performance ◽

Large Scale ◽

High Efficiency ◽

Perovskite Solar Cells ◽

Growth Control ◽

Single Crystal Silicon ◽

Large Area ◽

Crystal Silicon ◽

Control Interface

Perovskite solar cells (PSCs) have received a great deal of attention in the science and technology field due to their outstanding power conversion efficiency (PCE), which increased rapidly from 3.9% to 25.5% in less than a decade, comparable to single crystal silicon solar cells. In the past ten years, much progress has been made, e.g. impressive ideas and advanced technologies have been proposed to enlarge PSC efficiency and stability. However, this outstanding progress has always been referred to as small-area (<0.1 cm2) PSCs. Little attention has been paid to the preparation processes and their micro-mechanisms for large-area (>1 cm2) PSCs. Meanwhile, scaling up is an inevitable way for large-scale application of PSCs. Therefore, we firstly summarize the current achievements for high efficiency and stability large-area perovskite solar cells, including precursor composition, deposition, growth control, interface engineering, packaging technology, etc. Then we include a brief discussion and outlook for the future development of large-area PSCs in commercialization.

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Huge challenges in perovskite solar cells industrialization

Advanced Applied Materials ◽

10.36822/adv.app.mater.20180104 ◽

2018 ◽

Keyword(s):

Solar Cells ◽

Industrial Development ◽

High Performance ◽

Power Conversion ◽

Perovskite Solar Cells ◽

Large Size ◽

Metal Halide Perovskite ◽

Halide Perovskite ◽

The Stability ◽

Fabrication Costs

Due to their high solar to electric power conversion efficiency (PCE) and low fabrication costs, metal halide perovskite solar cells (PSCs) attract enormous research interest in recent years. However, their industrial development is hampered because there are still the difficulties to reach high performance on large size devices and challenges on the stability of perovskite.

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Iodine reduction for reproducible and high-performance perovskite solar cells and modules

Science Advances ◽

10.1126/sciadv.abe8130 ◽

2021 ◽

Vol 7 (10) ◽

pp. eabe8130

Author(s):

Shangshang Chen ◽

Xun Xiao ◽

Hangyu Gu ◽

Jinsong Huang

Keyword(s):

Solar Cells ◽

High Performance ◽

High Efficiency ◽

Electronic Materials ◽

Substantial Reduction ◽

Perovskite Solar Cells ◽

High Yield ◽

Operation Conditions ◽

Record Value ◽

Precursor Powders

Perovskite-based electronic materials and devices such as perovskite solar cells (PSCs) have notoriously bad reproducibility, which greatly impedes both fundamental understanding of their intrinsic properties and real-world applications. Here, we report that organic iodide perovskite precursors can be oxidized to I2 even for carefully sealed precursor powders or solutions, which markedly deteriorates the performance and reproducibility of PSCs. Adding benzylhydrazine hydrochloride (BHC) as a reductant into degraded precursor solutions can effectively reduce the detrimental I2 back to I−, accompanied by a substantial reduction of I3−-induced charge traps in the films. BHC residuals in perovskite films further stabilize the PSCs under operation conditions. BHC improves the stabilized efficiency of the blade-coated p-i-n structure PSCs to a record value of 23.2% (22.62 ± 0.40% certified by National Renewable Energy Laboratory), and the high-efficiency devices have a very high yield. A stabilized aperture efficiency of 18.2% is also achieved on a 35.8-cm2 mini-module.

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Fundamental physics behind high-efficiency organo-metal halide perovskite solar cells

Journal of Materials Chemistry A ◽

10.1039/c5ta01376c ◽

2015 ◽

Vol 3 (30) ◽

pp. 15372-15385 ◽

Cited By ~ 81

Author(s):

Yu-Che Hsiao ◽

Ting Wu ◽

Mingxing Li ◽

Qing Liu ◽

Wei Qin ◽

...

Keyword(s):

Solar Cells ◽

Charge Transport ◽

Excited States ◽

High Efficiency ◽

Perovskite Solar Cells ◽

Metal Halide ◽

Fundamental Physics ◽

Metal Halide Perovskite ◽

Halide Perovskite

Polarization and spin-dependent excited states and charge transport.

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Sprayed P25 scaffolds for high-efficiency mesoscopic perovskite solar cells

Chemical Communications ◽

10.1039/c5cc01939g ◽

2015 ◽

Vol 51 (51) ◽

pp. 10306-10309 ◽

Cited By ~ 11

Author(s):

Haibo Huang ◽

Jiangjian Shi ◽

Songtao Lv ◽

Dongmei Li ◽

Yanhong Luo ◽

...

Keyword(s):

Solar Cells ◽

High Efficiency ◽

Perovskite Solar Cells ◽

Uniform Thickness ◽

Large Size ◽

Spray Method

Uniform, thickness-controllable and large-size mesoscopic TiO2 films have been prepared by a spray method by using commercial P25 nanoparticles, yielding high efficiency for perovskite solar cells.

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