Colored, see-through perovskite solar cells employing an optical cavity

Lee, Kyu‐Tae; Fukuda, Masaji; Joglekar, Suneel; Guo, L. Jay

doi:10.1039/c5tc00622h

Cited by 94 publications

(82 citation statements)

References 33 publications

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“…Table 1 summarizes the flexible devices mentioned in this review, including both forward type and inverted type. The flexibility of perovskite solar cells promises to bring very important advantages to energy technology, such as cheap manufacture through roll to roll printing, lightweight, potentially color tuning [39,40] and wearable power generation.…”

Section: Discussionmentioning

confidence: 99%

Flexible organic-inorganic hybrid perovskite solar cells

Halim

Guo

2016

Sci. China Mater.

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The area of organic-inorganic hybrid perovskite has undergone especially intense research and transformation over the past seven years. Although most of the focus is on achieving high power efficiencies (>20%) on rigid substrates by solution process, the flexible version has not been neglected and has also gone through vast improvements in terms of efficiencies and durability. In this review paper, the most recent three years' developments in flexible perovskite solar cells are covered, showcasing the key of strategies used to transform these cells from rigid to flexible. Future outlook will be presented at the end exhibiting the potential problems that need to be solved in order to send these novel flexible power generators into the future market.

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Section: Discussionmentioning

confidence: 99%

Flexible organic-inorganic hybrid perovskite solar cells

Halim

Guo

2016

Sci. China Mater.

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“…[78] It is worth mentioning that this similar MC structure has also been studied in perovskite solar cells. [79,80] As shown in Figure 20a, sunlight is incident from ITO sides, the MC cathode reflects most of the incident light back to the active layer to increase the light absorption of the active layer. According to the MC effect, light in specific wavelength can pass through to achieve the function of color and transparency.…”

Section: Other Types Of MC Applicationsmentioning

confidence: 99%

Recent Advances of Organic Solar Cells with Optical Microcavities

et al. 2019

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In recent decades, organic solar cells (OSCs) have drawn increasing interest due to their unique properties such as low cost, solution‐processing, flexibility, semitransparency, and nontoxicity. Due to some shortcomings of limited optical absorption in organic semiconductors as well as low carrier mobility and short exciton diffusion length, light‐trapping technologies such as surface plasmon resonance, photonic crystals, and microcavities (MCs) have been widely developed to improve device performance. Among these methods, the MC effect is liable to form and has unneglectable influences on the device efficiency. However, few reports systematically summarize the development of MC‐based OSCs. Herein, the principle of the MC effect is introduced first, and subsequently, the application and the development of MCs in single and multi‐junction OSCs are described in detail. Furthermore, in addition to the traditional MCs‐enhanced light absorption, other applications based on the MC structure in OSCs and other photo‐electronic conversion devices are also represented. Finally, the problems that need to be solved and the development directions of MC‐based OSCs in the future are outlined. It is believed that this review can provide new thinking for achieving high‐performance OSCs with optical means.

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“…Our work provides a guideline for optimizing a photoactive layer thickness in high efficiency hybrid PV design, which can be adopted by other material systems as well. Based on these understandings, we have also developed colored perovskite PV by integrating an optical cavity with the perovskite semiconductors [4]. The principle and experimental results will be presented.…”

mentioning

confidence: 98%

Colored ultra-thin hybrid photovoltaics with high quantum efficiency for decorative PV applications (Presentation Recording)

Guo

2015

SPIE Proceedings

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This talk will describe an approach to create architecturally compatible and decorative thin-film-based hybrid photovoltaics [1]. Most current solar panels are fabricated via complex processes using expensive semiconductor materials, and they are rigid and heavy with a dull, black appearance. As a result of their non-aesthetic appearance and weight, they are primarily installed on rooftops to minimize their negative impact on building appearance. Recently we introduced dual-function solar cells based on ultra-thin dopant-free amorphous silicon embedded in an optical cavity that not only efficiently extract the photogenerated carriers but also display distinctive colors with the desired angle-insensitive appearances [1,2]. The angle-insensitive behavior is the result of an interesting phase cancellation effect in the optical cavity with respect to angle of light propagation [3]. In order to produce the desired optical effect, the semiconductor layer should be ultra-thin and the traditional doped layers need to be eliminated. We adopted the approach of employing charge transport/blocking layers used in organic solar cells to meet this demand. We showed that the ultra-thin (6 to 31 nm) undoped amorphous silicon/organic hybrid solar cell can transmit desired wavelength of light and that most of the absorbed photons in the undoped a-Si layer contributed to the extracted electric charges. This is because the a-Si layer thickness is smaller than the charge diffusion length, therefore the electron-hole recombination is strongly suppressed in such ultra-thin layer. Reflective colored PVs can be made in a similar fashion. Light-energy-harvesting colored signage was demonstrated. Furthermore, a cascaded photovoltaics scheme based on tunable spectrum splitting can be employed to increase power efficiency by absorbing a broader band of light energy. Our work provides a guideline for optimizing a photoactive layer thickness in high efficiency hybrid PV design, which can be adopted by other material systems as well. Based on these understandings, we have also developed colored perovskite PV by integrating an optical cavity with the perovskite semiconductors [4]. The principle and experimental results will be presented.

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Colored, see-through perovskite solar cells employing an optical cavity

Abstract: Optical cavity-integrated perovskite solar cells capable of creating distinctive semitransparent colors with high efficiencies are demonstrated.

Cited by 94 publications

References 33 publications

Flexible organic-inorganic hybrid perovskite solar cells

Flexible organic-inorganic hybrid perovskite solar cells

Recent Advances of Organic Solar Cells with Optical Microcavities

Colored ultra-thin hybrid photovoltaics with high quantum efficiency for decorative PV applications (Presentation Recording)

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