Coloring Semitransparent Perovskite Solar Cells <i>via</i> Dielectric Mirrors

Quiroz, César Omar Ramírez; Bronnbauer, Carina; Levchuk, Ievgen; Hou, Yi; Brabec, Christoph J.; Forberich, Karen

doi:10.1021/acsnano.6b00225

Cited by 101 publications

(64 citation statements)

References 38 publications

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“…These structures are attracting increasing interest to enhance the performance of perovskite solar cells. As an example, Brabec and co‐workers implemented inorganic mesoporous DBRs fabricated by doctor blading of commercial refractive inks as back reflectors in transparent perovskite photovoltaic devices ( Figure a). In addition to the increased absorption cross‐section, the color of the device can be tuned according to architectonic needs (Figure a′) .…”

Section: Applicationsmentioning

confidence: 99%

“…As an example, Brabec and co‐workers implemented inorganic mesoporous DBRs fabricated by doctor blading of commercial refractive inks as back reflectors in transparent perovskite photovoltaic devices ( Figure a). In addition to the increased absorption cross‐section, the color of the device can be tuned according to architectonic needs (Figure a′) . The implementation of the DBRs as a back reflector provided a significant increase of the short‐circuit current with only minor effects on the open‐circuit voltage, thus enhancing the power conversion efficiency of about 20% (Figure a″) .…”

Section: Applicationsmentioning

confidence: 99%

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Advances in Functional Solution Processed Planar 1D Photonic Crystals

Lova

Manfredi

Comoretto

2018

Advanced Optical Materials

170

226

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photonic states (PDOS), [2][3][4] which helps explaining the photoluminescence (PL) changes of materials when embedded in the PhC structure.Traditionally, PhCs have been made carving bulky inorganic dielectrics or sem iconductors. These structures are still a hot topic in photonics for optical fibers, light emitting diodes (LEDs), sensors, photo voltaic devices, lasers, discrete and integrated optical components, lightening, and quantum computing. [6] However, new solution processable photoactive materials (e.g., organic semiconductors, quantum dots, hybrid perovskites, and selfassem bling supramolecular systems) stimulated the development of PhCs grown with organic and colloidal materials by solution and melt processes. [7] Among PhCs, distributed Bragg reflectors (DBRs) are cur rently the most interesting owing to their planar structure which generates a simple optical response that represents a playground to understand deep physical concepts, as described in Sections 2.4 and 4. DBRs are indeed made of alternated thin films of different dielectric materials. This simplicity makes them the only PhCs that can take advantage of large area growths (see Section 3.1). [8] Such fabrication methods are unconceivable with bulky inorganic DBRs and might reduce processing costs and enhance customizability, also on industrial scale, thus adding unprecedented market opportunities. Figure 1 illustrates the evolution and fabrications of solution and melt processed DBRs. The top of the Figure displays three wellknown natural DBRs belonging to animal and plant reigns: the mother of pearl, [9] the Panamanian Tortoise beetle exoskel eton, [10] and the Pollia Condensata skin, [11] whose growth is driven by the thermodynamics of spinodal phase separation. [12] The interest in these natural structures leads to their emulation until the development of solutionbased fabrication methods for flexible synthetic DBRs made of polymers and inorganic nanoparticles (Figure 1). At the base of Figure 1, we also show some applications arose only in the last decades. From left to right: the use of DBRs in functional architecture, in enhance ment of photon absorption for photovoltaic cells and modules, emission control, lasing, and sensing. [7c,13] In this paper we will first briefly review the properties of DBRs and then focus on the reasons that guided the research toward new solutionbased and largearea fabrications, describing current processes used both at the laboratory and largearea scales. We will then review the main applications of these structures comparing the performances of mesoporous inorganic and polymer devices. An overview on the properties and applications of polymer and inorganic planar 1D photonic crystals fabricated from solution is provided here. In the last decades, photonic crystals became technologically relevant for light management, photovoltaics, sensing, and lasing. Such structures are traditionally produced by lithographic and vacuum techniques, but the need to reduce costs and to scale-up the fabrication have lea...

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Section: Applicationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Advances in Functional Solution Processed Planar 1D Photonic Crystals

Lova

Manfredi

Comoretto

2018

Advanced Optical Materials

170

226

View full text Add to dashboard Cite

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“…While for the counter electrodes, the carbon materials or silver nanowires have been deposited via a wet‐chemistry printing method. However, the carbon materials have low conductivity, while the silver nanowires are readily react with the halides to form silver halides .…”

Section: Photovoltaic Characteristics Of the Pscs Made From The Sputtmentioning

confidence: 99%

Efficient Planar Perovskite Solar Cells via a Sputtered Cathode

Shi

Zhou

et al. 2019

Solar RRL

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Perovskite solar cells (PSCs) attract great attention due to their low cost and high efficiency. In general, the Au cathode, a key component in PSCs, is prepared via an uneconomic vacuum thermal deposition method. Instead, the sputtering deposition method is much more economic and faster. However, it is generally thought that the organic hole transport layer such as 2,2′,7,7′‐tetrakis[N,N‐di(4‐methoxyphenyl)amino]‐9,9′‐spirobifluorene (Spiro‐OMeTAD) can be easily damaged by the high energy plasma during the sputtering process. Thus, the performance of the PSCs greatly decreases. Herein, the structure of the planar PSCs is carefully manipulated by matching the thickness of Spiro‐OMeTAD layer and the Au film. With the further engineering of the interface of the Au/Spiro‐OMeTAD, the planar PSCs with the sputtered Au cathode exhibit a highly reproducible average efficiency of 17.6% ± 0.8%, with the best efficiency of 18.3%. In addition, the Cu electrode is demonstrated by the sputtering method. Finally, the Au sputter deposition is scaled up to make a high efficiency (14.7%) 10 × 10 cm2 module. This demonstrates well that the sputtering deposition of the metal cathode is an effective way for the fabrication of high efficient PSCs for future industrialization.

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“…As one of promising candidates, silver nanowires (AgNWs) have been employed for printable metal back electrode of PeSCs . The AgNWs dispersion solution was deposited via solution processes, such as spin coating or spray coating, as the top electrode, and the final devices were semi‐transparent with a reasonable cell performance under both side illuminations.…”

Section: Advanced Approaches Toward Roll‐to‐roll Productionmentioning

confidence: 99%

Progress in Scalable Coating and Roll‐to‐Roll Compatible Printing Processes of Perovskite Solar Cells toward Realization of Commercialization

Jung

Hwang

Heo

et al. 2018

Advanced Optical Materials

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Organic–inorganic halide perovskite solar cells (PeSCs) have attracted worldwide attention due to their excellent photovoltaic properties, such as their proper bandgap, strong light absorption, long exciton diffusion length, and easy device fabrication with solution processes, suggesting a great potential for low‐cost, high‐performance solar cells. After a power conversion efficiency (PCE) of 3.8% achieved in 2009, numerous efforts have been made to create PeSCs with high PCEs over 20% in small‐area cells. The next challenge is transition from the lab‐scale spin coating to a large‐scale coating/printing, which will preferably involve the cost‐competitive roll‐to‐roll manufacturing and vacuum‐free full‐printing process. This review provides a progress report on studies related to the scalable deposition methods for PeSCs, such as slot‐die coating, blade coating, spray coating, and various other methods, and to their processing strategies for morphology control in perovskite film formation and discusses the challenges and potential of commercialization of PeSCs in the future.

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Coloring Semitransparent Perovskite Solar Cells via Dielectric Mirrors

Cited by 101 publications

References 38 publications

Advances in Functional Solution Processed Planar 1D Photonic Crystals

Advances in Functional Solution Processed Planar 1D Photonic Crystals

Efficient Planar Perovskite Solar Cells via a Sputtered Cathode

Progress in Scalable Coating and Roll‐to‐Roll Compatible Printing Processes of Perovskite Solar Cells toward Realization of Commercialization

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