@article{8a3f1fa209ea45fab9ea98cd89dee1c7,
title = "Tuning the Electrical Properties of Cellulose Nanocrystals through Laser-Induced Graphitization for UV Photodetectors",
abstract = "Laser-induced graphene from abundant and renewable biobased carbon sources may open the way for sustainable and low-cost electronic device generation. Yet little progress has been made on nanocellulose-based materials to produce laser-induced graphene (LIG). In this work, we demonstrate the versatility of the laser-assisted technique to promote graphitization of pineapple cellulose nanocrystals (CNCs), aimed at UV photodetectors. CNCs tablets are used as carbon-based precursors to photonically synthesize LIG nanopowders, which are used as functional materials in the formulation of printable cellulose composite electroconductive inks, using sodium carboxymethyl cellulose (CMC) as a binder. The developed CMC/LIG inks are used to pattern LIG electrodes (LIGE) on tracing paper, using hand-drawing techniques. The impact of the laser parameters in the conversion of the CNCs tablets into graphene nanopowder, as well as the influence of the CMC/LIG ink composition allied with an additional laser treatment on the chemical, morphological, and electrical properties of the hand-drawn cellulose composite films is systematically addressed. The LIG nanopowder composite films reveal less sheet resistance after laser treatment. The optimal conditions were found for 0.6 w/v% of LIG nanopowder in CMC solution at +1.1 mm defocus, 8.2 cm/s tip laser speed and 2.4 W CO2 laser power. As a proof-of-concept, fully printed zinc oxide UV photodetectors with the optimized LIGE are demonstrated, showing a superior performance in comparison to other UV sensors described in the literature. ",
keywords = "laser-induced graphene, nanocellulose, paper electronics, pineapple leaf fibers, UV sensor",
author = "Claro, {Pedro I. C.} and Marques, {Ana C.} and In{\^e}s Cunha and Martins, {Rodrigo Ferr{\~a}o Paiva} and Pereira, {Lu{\'i}s M. N.} and Marconcini, {Jos{\'e} M.} and Mattoso, {Luiz H. C.} and Elvira Fortunato",
note = "Funding Information: info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FCTM%2F50025%2F2013/PT# info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FNAN-MAT%2F32558%2F2017/PT# Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico-CNPq (304044/2019–9 ; 402287/2013–4); Coordena{\c c}{\~a}o de Aperfei{\c c}oamento de Pessoal de N{\'i}vel Superior-CAPES (001; 88882.157024/2017 01); European Research Council (ERC) (787410-DIGISMART); European Commission under the project NewFun (ERC-StG-2014, GA 640598); Funding Information: info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FCTM%2F50025%2F2013/PT# info:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FNAN-MAT%2F32558%2F2017/PT# info:eu-repo/grantAgreement/EC/H2020/787410/EU# info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F115173%2F2016/PT# info:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F126409%2F2016/PT# This study was financed in part by Coordena{\c c}{\~a}o de Aperfei{\c c}oamento de Pessoal de N{\'i}vel Superior - Brasil (CAPES) - Finance Code 001. The authors would like to thank the financial support given by CNPq–National Council for Scientific and Technological Development (402287/2013-4, 304044/2019-9), SISNANO/MCTI, Financier of Studies and Projects (FINEP) and Brazilian Agricultural Research Corp. (Embrapa) AgroNano research network. The authors would like to acknowledge the European Commission under the project NewFun (ERC-StG-2014, GA 640598). This work was also supported by the FEDER funds through the COMPETE 2020 Program and the National Funds through the FCT–Portuguese Foundation for Science and Technology under the Project No. POCI-01-0145- and CAPES/Embrapa (grant 88882.157024/2017 01). Publisher Copyright: {\textcopyright} 2021 American Chemical Society. All rights reserved.",
year = "2021",
month = aug,
day = "27",
doi = "10.1021/acsanm.1c01453",
language = "English",
volume = "4",
pages = "8262--8272",
journal = "ACS APPLIED NANO MATERIALS",
issn = "2574-0970",
publisher = "ACS - American Chemical Society",
number = "8",
}