title: Nanocellulose-based Translucent Diffuser for Optoelectronic Device Applications with Dramatic Improvement of Light Coupling.
abstract: Nanocellulose is a biogenerated and biorenewable organic material. Using a process based on 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)/NaClO/NaBr system, a highly translucent and light-diffusive film consisting of many layers of nanocellulose fibers and wood pulp microfibers was made. The film demonstrates a combination of large optical transmittance of ∼90% and tunable diffuse transmission of up to ∼78% across the visible and near-infrared spectra. The detailed characterizations of the film indicate the combination of high optical transmittance and haze is due to the film's large packing density and microstructured surface. The superior optical properties make the film a translucent light diffuser and applicable for improving the efficiencies of optoelectronic devices such as thin-film silicon solar cells and organic light-emitting devices.
authors.affiliation: DuPont Central Research and Development , Wilmington, Delaware 19880, United States.
authors.forename: Wei
authors.initials: W
authors.lastname: Wu
authors.affiliation: DuPont Central Research and Development , Wilmington, Delaware 19880, United States.
authors.forename: Nancy G
authors.initials: NG
authors.lastname: Tassi
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20740, United States.
authors.forename: Hongli
authors.initials: H
authors.lastname: Zhu
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20740, United States.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Fang
authors.affiliation: Department of Materials Science and Engineering, University of Maryland , College Park, Maryland 20740, United States.
authors.forename: Liangbing
authors.initials: L
authors.lastname: Hu
keywords: diffuser; nanocellulose; optoelectronics; organic lighting emitting diodes; solar cells; thin film