One-step roll-to-roll air processed high efficiency perovskite solar cells

Zuo, Chuantian; Vak, Doojin; Angmo, Dechan; Ding, Liming; Gao, Mei

doi:10.1016/j.nanoen.2018.01.037

Cited by 295 publications

(239 citation statements)

References 45 publications

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“…In Figure 6b, this progress is shown for the coating and printing techniques discussed in this work. : [30,31,33,51,59,61,62,64,72,73,87,92,93,95,99,104,115,118,121,123,125,132,136]). From an application perspective the PCE should be reported with respect to the aperture area, but in several early studies the PCE is provided with regard to the active area instead.…”

Section: State-of-the-art Resultsmentioning

confidence: 99%

“…Moreover, additives like NH 4 Cl, [51] DIO [52][53][54][55] (1,8-diiodooctane), or HPA [56] (hypophosphorous acid) have demonstrated to support the formation of high-quality perovskite thin-films via blade coating and slot-die coating. In the more common one-step route, the coated precursor solution contains already all chemical components of the perovskite crystal structure.…”

Section: Blade Coating and Slot-die Coatingmentioning

confidence: 99%

“…[ [59] Beyond this, a stable power output efficiency >19% for over 5 min was demonstrated for blade-coated multi-cation PSC by Tang et al using elevated substrate temperatures of up to 150 °C and gas quenching. [51,63] A key advantage of gas quenching over solvent quenching, which is the most established route to induce fast crystallization in spin-coated multi-cation perovskite films, is that a gas supply and exhaust is in principle very simple to implement in a roll-to-roll process and requires no subsequent drying time. [61] Recently, Duo et al used a highly concentrated solution in a lower boiling point solvent (methyl amine-charged acetonitrile) to substitute dimethylformamide (DMF).…”

Section: Blade Coating and Slot-die Coatingmentioning

confidence: 99%

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Coated and Printed Perovskites for Photovoltaic Applications

et al. 2019

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optoelectronic devices, a novel lowcost and highly efficient photovoltaic (PV) material emerged. Only 10 years after the first reported perovskite solar cells (PSCs), power conversion efficiencies (PCEs) above 23% were certified, exceeding those of much longer established thin-film PV technologies, including organic photovoltaics (OPV) and inorganic thin-film PV based on copper indium gallium selenide (CIGS) or cadmium telluride (CdTe). [1] The material class of hybrid organic-inorganic perovskites combines excellent optoelectronic properties, such as long diffusion lengths [2] and short absorption lengths, [3] with the ease of solution processing, low energy payback times, and low-cost precursor materials. [4] Moreover, the optoelectronic properties and the material stability can be engineered by varying the constituents in the perovskite crystal structure ABX 3 . For example, the bandgap (E G ) can be tuned by changing the stoichiometric ratio of Br and I at the halogen anion site X. [5][6][7] In order to improve the stability of hybrid organic-inorganic perovskites, compositional engineering of the cation site A was demonstrated to be successful via combining methylammonium (CH 3 NH 3 + or MA + ), formamidinium (CH 5 N 2 + or FA + ), Cs + , and Rb + ions in the so-called multi-cation perovskites. [8][9][10][11] Three key challenges hinder today the economical breakthrough of PSCs:Stability: First, the instability of PSCs against moisture, oxygen, light, and temperature limits the lifetime of PSCs to a fraction of the warranty lifetime (often >25 years) of the market dominating crystalline silicon (c-Si) PV. [12] Very respectable progress has been made over recent years to enhance the stability of PSCs by demonstrating stability over 1000 h, but significant further advances in terms of stability are needed to lift the technology to a level where it is ready to compete with, or be a bolt-on tandem companion to the current PV heavyweight of c-Si. A number of reviews cover recent developments on the topic of stability. [13][14][15][16][17] Toxicity: Second, highly efficient PSCs still contain lead, the toxicity of which hampers the acceptance of the technology and could conflict with legislative barriers. [18] Other recent reviews present progress with respect to this challenge. [19,20] Upscaling: Third, the upscaling of perovskite PV devices to commercial PV module sizes (>1 m 2 ) must be achieved. To date, the vast majority of research and development of PSCs is still Hybrid organic-inorganic metal halide perovskite semiconductors provide opportunities and challenges for the fabrication of low-cost thin-film photovoltaic devices. The opportunities are clear: the power conversion efficiency (PCE) of small-area perovskite photovoltaics has surpassed many established thin-film technologies. However, the large-scale solution-based deposition of perovskite layers introduces challenges. To form perovskite layers, precursor solutions are coated or printed and these must then be crystallized into the perovskite structur...

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Section: State-of-the-art Resultsmentioning

confidence: 99%

Section: Blade Coating and Slot-die Coatingmentioning

confidence: 99%

Section: Blade Coating and Slot-die Coatingmentioning

confidence: 99%

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Coated and Printed Perovskites for Photovoltaic Applications

et al. 2019

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“…[7] Impedance spectroscopy has been intensively used to understand and distinguish electronic and ionic processes occurring in the bulk of the perovskite film and at the interfacial contacts in operating HPSCs. [27][28][29] The charge carrier lifetime in this device is 0.86 µs (τ = R 2 C 2 ). Since no current flows through the device at open-circuit condition, all the photogenerated free charge carriers must recombine.…”

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confidence: 94%

Enhancing the Performance of the Half Tin and Half Lead Perovskite Solar Cells by Suppression of the Bulk and Interfacial Charge Recombination

et al. 2018

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In this article it is investigated how the hole extraction layer (HEL) influence the charge recombination and performance in half tin and half lead (FASn Pb I ) based solar cells (HPSCs). FASn Pb I film grown on PEDOT:PSS displays a large number of pin-holes and open grain boundaries, resulting in a high defect density and shunts in the perovskite film causing significant bulk and interfacial charge recombination in the HPSCs. By contrast, FASn Pb I films grown on PCP-Na, an anionic conjugated polymer, show compact and pin-hole free morphology over a large area, which effectively eliminates the shunts and trap states. Moreover, PCP-Na is characterized by a higher work function, which determines a favorable energy alignment at the anode interface, enhancing the charge extraction. Consequently, both the interfacial and bulk charge recombination in devices using PCP-Na HEL are considerably reduced giving rise to an overall improvement of all the device parameters. The HPSCs fabricated with this HEL display power conversion efficiency up to 16.27%, which is 40% higher than the efficiency of the control devices using PEDOT:PSS HEL (11.60%). Furthermore, PCP-Na as HEL offers superior performance in larger area devices compared to PEDOT:PSS.

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“…[5] Despite these impressive achievements, most of the reported high efficiency devices were fabricated by spin-coating which allows to prepare small-size perovskite films using small volume of solution, although most solution is wasted during spinning. To further advance the technology toward industrial aspirations, it is highly imperative to redevelop facile and robust deposition protocols that can be used for fabrication of perovskite films via scalable printing methods.Recently, several scalable deposition techniques have been developed to prepare perovskite films, such as spray-coating, [8] doctor-blading, [9][10][11][12][13][14] slot-die coating, [2,[15][16][17] and so on. To further advance the technology toward industrial aspirations, it is highly imperative to redevelop facile and robust deposition protocols that can be used for fabrication of perovskite films via scalable printing methods.…”

mentioning

confidence: 99%

A Generalized Crystallization Protocol for Scalable Deposition of High‐Quality Perovskite Thin Films for Photovoltaic Applications

et al. 2019

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Metal halide perovskite solar cells (PSCs) have raised considerable scientific interest due to their high cost‐efficiency potential for photovoltaic solar energy conversion. As PSCs already are meeting the efficiency requirements for renewable power generation, more attention is given to further technological barriers as environmental stability and reliability. However, the most major obstacle limiting commercialization of PSCs is the lack of a reliable and scalable process for thin film production. Here, a generic crystallization strategy that allows the controlled growth of highly qualitative perovskite films via a one‐step blade coating is reported. Through rational ink formulation in combination with a facile vacuum‐assisted precrystallization strategy, it is possible to produce dense and uniform perovskite films with high crystallinity on large areas. The universal application of the method is demonstrated at the hand of three typical perovskite compositions with different band gaps. P‐i‐n perovskite solar cells show fill factors up to 80%, underpinning the statement of the importance of controlling crystallization dynamics. The methodology provides important progress toward the realization of cost‐effective large‐area perovskite solar cells for practical applications.

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One-step roll-to-roll air processed high efficiency perovskite solar cells

Cited by 295 publications

References 45 publications

Coated and Printed Perovskites for Photovoltaic Applications

Coated and Printed Perovskites for Photovoltaic Applications

Enhancing the Performance of the Half Tin and Half Lead Perovskite Solar Cells by Suppression of the Bulk and Interfacial Charge Recombination

A Generalized Crystallization Protocol for Scalable Deposition of High‐Quality Perovskite Thin Films for Photovoltaic Applications

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