Transparent Conductive Nanofiber Paper for Foldable Solar Cells

Nogi, Masaya; Karakawa, Makoto; Komoda, Natsuki; Yagyu, Hitomi; Nge, Thi Thi

doi:10.1038/srep17254

Cited by 157 publications

(123 citation statements)

References 24 publications

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“…These advantageous properties have successfully paved the way toward the application of nanopaper in exible electronics such as transparent electrodes, organic solar cells, transistors, antenna, and memory. [4][5][6][7][8][9][10] The starting materials for such clear transparent nanopaper with low haze include holocellulose pulp, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-mediated oxidized pulp, and carboxymethylated pulp. [11][12][13][14][15] Among them, clear transparent nanopaper from holocellulose pulp is one of the most promising candidates for exible electronic device substrates because of the high thermal resistance.…”

Section: Introductionmentioning

confidence: 99%

Clear transparent cellulose nanopaper prepared from a concentrated dispersion by high-humidity drying

2018

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Optically transparent cellulose nanopaper is a promising candidate for flexible device substrates because of its light weight, surface smoothness, and high dimensional stability with respect to temperature.Conventionally, clear transparent nanopaper has been fabricated from cellulose nanofiber dispersions with quite low concentration: less than 0.5 wt%. However, this diluteness leads to several problems, such as huge energy consumption and long operation time for drying. Therefore, nanopaper should be fabricated from a concentrated dispersion to mitigate these problems. In this study, transparent nanopaper was fabricated from cellulose nanofiber dispersions with various concentrations (0.24-1.81 wt%). Optical experiments revealed that the haze of the transparent nanopaper increased monotonically with cellulose nanofiber dispersion concentration, when the cellulose nanofiber dispersion was prepared from holocellulose pulp and conventional over-drying was applied. Based on our insight into the origin of this increase in the haze of transparent nanopaper, we developed highhumidity drying, which successfully produced clear transparent nanopaper from a concentrated dispersion without prolonged drying time.

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Section: Introductionmentioning

confidence: 99%

Clear transparent cellulose nanopaper prepared from a concentrated dispersion by high-humidity drying

2018

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“…[10][11][12][13][14][15][16] Therefore, nanopaper has recently received much attention as a substrate for flexible electronics. 9,[17][18][19][20][21][22][23][24][25][26][27][28][29] To date, various electronic devices including organic/inorganic thin-film transistors, 9,21-23 light-emitting diodes, 24 solar cells, 23,25,26 antennas 27,28 and triboelectric generators 29 have been demonstrated on nanopaper substrates. However, a nonvolatile memory, which is the essential component for IoE technology, has not been demonstrated on a nanopaper substrate so far.…”

Section: Introductionmentioning

confidence: 99%

All-nanocellulose nonvolatile resistive memory

et al. 2016

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Single-use disposable nonvolatile memory devices hold promise for novel applications in internet of everything (IoE) technology by storing the health status of individual humans in daily life. However, conventional memory devices are not disposable because they are mostly composed of non-renewable, non-biodegradable and sometimes toxic materials, causing serious damage to ecological systems when they are released to the environment. Here, we demonstrate an environment-friendly, disposable nonvolatile memory device composed of 99.3 vol.% nanocellulose. Our memory device consists of a nanocellulose-based resistive-switching layer and a nanopaper substrate. The device exhibited nonvolatile resistive switching with the capability of multilevel storage and potential scalability down to the single nanofiber level (ca. 15 nm). The biodegradability of our memory device was confirmed by burying it in natural soil for 26 days.

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“…Such contact is conventionally composed of a transparent conductive metal oxide (TCO), but research on alternative and inexpensive methods is essential. Examples of such alternatives are metallic networks engineered by soft lithography, such as colloidal lithography or nano-imprint; and the production of conductive transparent paper, for instance by using cellulose nanofibers and printing silver nanowires [55]. The colloidal lithography approach has allowed engineering innovative ultrathin electrodes with a honeycomb lattice structure [56], known as micromesh electrodes (MMEs) [57,58], which already shows transmittance (T ~91% in visible range) and sheet resistance (Rs ~6.2 Ohm/square) better than the state-of-the-art ITO (Rs ~10 Ohm/square and T ~90%) [59].…”

Section: Solar-powered Photovoltaic Papermentioning

confidence: 99%

Optoelectronics and Bio Devices on Paper Powered by Solar Cells

Vicente¹,

Araújo²,

Gaspar³

et al. 2017

Nanostructured Solar Cells

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The employment of printing techniques as cost-effective methods to fabricate low cost, flexible, disposable and sustainable solar cells is intimately dependent on the substrate properties and the adequate electronic devices to be powered by them. Among such devices, there is currently a growing interest in the development of user-oriented and multipurpose systems for intelligent packaging or on-site medical diagnostics, which would greatly benefit from printable solar cells as their energy source for autonomous operation.This chapter first describes and analyzes different types of cellulose-based substrates for flexible and cost effective optoelectronic and bio devices to be powered by printed solar cells. Cellulose is one of the most promising platforms for green recyclable electronics and it is fully compatible with large-scale printing techniques, although some critical requirements must be addressed. Paper substrates exist in many forms. From common office paper, to packaging cardboard used in the food industry, or nanoscale engineered cellulose (e.g. bacterial cellulose). However, it is the structure and content of paper that determines its end use. Secondly, proof-of-concept of optoelectronic and bio devices produced by inkjet printing are described and show the usefulness of solar cells as a power source or as a chemical reaction initiator for sensors.

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Transparent Conductive Nanofiber Paper for Foldable Solar Cells

Cited by 157 publications

References 24 publications

Clear transparent cellulose nanopaper prepared from a concentrated dispersion by high-humidity drying

Clear transparent cellulose nanopaper prepared from a concentrated dispersion by high-humidity drying

All-nanocellulose nonvolatile resistive memory

Optoelectronics and Bio Devices on Paper Powered by Solar Cells

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