Ultrathin, lightweight and flexible perovskite solar cells with an excellent power-per-weight performance

Kang, Saewon; Jeong, Jaeki; Cho, Seungse; Yoon, Yung Jin; Park, Seung-Young; Lim, Seongdong; Kim, Jin Young; Ko, Hyunhyub

doi:10.1039/c8ta10585e

Cited by 128 publications

(107 citation statements)

References 48 publications

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“…Unfortunately, due to the feature of brittleness, ITO electrode does not demonstrate perfect performance in flexible photoelectric devices. Although some flexible transparent electrodes such as silver nanowires and carbon nanotubes have shown the potential for application in flexible PSCs, they have not made outstanding progress in device efficiency, especially in the large-area devices [34][35][36][37][38][39] . Therefore, flexible PSCs based on the modified ITO electrode are also worth for further investigation.…”

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confidence: 99%

Bio-inspired vertebral design for scalable and flexible perovskite solar cells

et al. 2020

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The translation of unparalleled efficiency from the lab-scale devices to practical-scale flexible modules affords a huge performance loss for flexible perovskite solar cells (PSCs). The degradation is attributed to the brittleness and discrepancy of perovskite crystal growth upon different substrates. Inspired by robust crystallization and flexible structure of vertebrae, herein, we employ a conductive and glued polymer between indium tin oxide and perovskite layers, which simultaneously facilitates oriented crystallization of perovskite and sticks the devices. With the results of experimental characterizations and theoretical simulations, this bionic interface layer accurately controls the crystallization and acts as an adhesive. The flexible PSCs achieve the power conversion efficiencies of 19.87% and 17.55% at effective areas of 1.01 cm 2 and 31.20 cm 2 respectively, retaining over 85% of original efficiency after 7000 narrow bending cycles with negligible angular dependence. Finally, the modules are assembled into a wearable solar-power source, enabling the upscaling of flexible electronics.

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confidence: 99%

Bio-inspired vertebral design for scalable and flexible perovskite solar cells

et al. 2020

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“…While totally flexible photovoltaic devices have improved, they are still not at the desired level. For instance, power conversion efficiencies of 4.2, 12.85, and 10% have been reported for ultra-flexible organic, perovskite, and quantum dot solar cells with power-per-weight output with values of 10, 29.4, and 6.5 W g −1 , respectively (Kaltenbrunner et al, 2012;Zhang et al, 2017;Kang et al, 2019); demonstrating the still evident gap in efficiency when compared to devices not focused on flexibility. It is worth-noting, that in all three cases, the strategy to enhance the light weight, stretchability and stability of the device, was focused on shifting from glass substrates to more flexible polymers in junction with AgNWs.…”

Section: Applications Photovoltaicsmentioning

confidence: 99%

“…It has been demonstrated that Graphene, a single layer of carbon atoms closely packed into a honeycomb twodimensional (2D) lattice (Novoselov et al, 2004), has potential for flexible electrochemical energy storage device applications due to its outstanding characteristics of chemical stability, high electrical conductivity and large surface area (Yan Wang et al, 2009). Applied into supercapacitors, it has been employed as an electrode when coupled with a wide variety of materials like cellulose (Pushparaj et al, 2007;Xing et al, 2019), polyaniline (de Souza Augusto et al, 2018;Kang et al, 2019), metallic foams (Gao et al, 2018;Manjakkal et al, 2018;Taniya Purkait, 2018) and aerogels (Bora et al, 2018) rendering overall promising results. Similarly, flexible Li-Ion batteries have also used carbon nanotubes as electrodes combined with graphene foams (Ren et al, 2018), carbon fibers , metal-oxides (Guo et al, 2019;Bubulinca et al, 2020) and nanoparticles (Yuan et al, 2018).…”

Section: Energy Storagementioning

confidence: 99%

Flexible Electronics: Status, Challenges and Opportunities

2020

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The concept of flexible electronics has been around for several decades. In principle, anything thin or very long can become flexible. While cables and wiring are the prime example for flexibility, it was not until the space race that silicon wafers used for solar cells in satellites were thinned to increase their power per weight ratio, thus allowing a certain degree of warping. This concept permitted the first flexible solar cells in the 1960s (Crabb and Treble, 1967). The development of conductive polymers (Shirakawa et al., 1977), organic semiconductors, and amorphous silicon (Chittick et al., 1969; Okaniwa et al., 1983) in the following decades meant huge strides toward flexibility and processability, and thus these materials became the base for electronic devices in applications that require bending, rolling, folding, and stretching, among other properties that cannot be fulfilled by conventional electronics (Cheng and Wagner, 2009) (Figure 1). Presently there is great interest in new materials and fabrication techniques which allow for highperformance scalable electronic devices to be manufactured directly onto flexible substrates. This interest has also extended to not only flexibility but also properties like stretchability and healability which can be achieved by utilizing elastomeric substrates with strong molecular interactions (Oh et al., 2016; Kang et al., 2018). Likewise, biocompatibility and biodegradability has been achieved through polymers that do not cause adverse effect to the body and can be broken down into smaller constituent pieces after utilization (Bettinger and Bao, 2010; Irimia-Vladu et al., 2010; Liu H. et al., 2019). This new progress is now enabling devices which can conform to complex and dynamic surfaces, such as those found in biological systems and bioinspired soft robotics. These next-generation flexible electronics open up a wide range of exciting new applications such as flexible lighting and display technologies for consumer electronics, architecture, and textiles, wearables with sensors that help monitor our health and habits, implantable electronics for improved medical imaging and diagnostics, as well as extending the functionality of robots and unmanned aircraft through lightweight and conformable energy harvesting devices and sensors. While conventional electronics are very capable of these functions, flexible electronics are intended to expand the mechanical features to adhere to novel form factors through hybrid strategies, or as standalone solutions where the application does not require high computation power, intended to be highly robust to deformation, low cost, thin, or disposable. The definition of flexibility differs from application to application. From bending and rolling for easier handling of large area photovoltaics, to conforming onto irregular shapes, folding, twisting, stretching, and deforming required for devices in electronic skin, all while maintaining device performance and reliability. While early progress and many important innovations have alre...

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“…Along with, the mechanical stability of the device is also essential to generate adequate power per weight for their utilization. The potential of reaching extremely high specific powers in PSC reporting ~29.4 W•g −1 with only 12% efficient device as demonstrated by Kang et al (2019) [205]. This However, stability was encountered as the most challenging for PSC efforts, were given to characterize it at the outdoor condition.…”

Section: Lightweight Pscs For Bipvmentioning

confidence: 99%

Perovskite Solar Cells for BIPV Application: A Review

et al. 2020

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The rapid efficiency enhancement of perovskite solar cells (PSCs) make it a promising photovoltaic (PV) research, which has now drawn attention from industries and government organizations to invest for further development of PSC technology. PSC technology continuously develops into new and improved results. However, stability, toxicity, cost, material production and fabrication become the significant factors, which limits the expansion of PSCs. PSCs integration into a building in the form of building-integrated photovoltaic (BIPV) is one of the most holistic approaches to exploit it as a next-generation PV technology. Integration of high efficiency and semi-transparent PSC in BIPV is still not a well-established area. The purpose of this review is to get an overview of the relative scope of PSCs integration in the BIPV sector. This review demonstrates the benevolence of PSCs by stimulating energy conversion and its perspective and gradual evolution in terms of photovoltaic applications to address the challenge of increasing energy demand and their environmental impacts for BIPV adaptation. Understanding the critical impact regarding the materials and devices established portfolio for PSC integration BIPV are also discussed. In addition to highlighting the apparent advantages of using PSCs in terms of their demand, perspective and the limitations, challenges, new strategies of modification and relative scopes are also addressed in this review.

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Ultrathin, lightweight and flexible perovskite solar cells with an excellent power-per-weight performance

Abstract: Ultralight and flexible perovskite solar cells with the orthogonal AgNW electrodes exhibit an excellent power-per-weight of 29.4 W g−1.

Cited by 128 publications

References 48 publications

Bio-inspired vertebral design for scalable and flexible perovskite solar cells

Bio-inspired vertebral design for scalable and flexible perovskite solar cells

Flexible Electronics: Status, Challenges and Opportunities

Perovskite Solar Cells for BIPV Application: A Review

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