Fundamental Study on Highly Transparent Films for Solar Cell Substrate Using Nanocellulose

Hae Min Jo; Soo Hyun Lee; Ji Young Lee

doi:10.7584/JKTAPPI.2023.12.55.6.109

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2023 Vol.55, Issue 6 Preview Page Next Page

Research Article

Fundamental Study on Highly Transparent Films for Solar Cell Substrate Using Nanocellulose 나노셀룰로오스를 이용한 태양전지 기판용 고투명 필름 제조를 위한 기초연구

30 December 2023. pp. 109-118

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Abstract

In this study, we conducted a fundamental investigation on the manufacturing of transparent films suitable for solar cell substrates using nanocellulose prepared from non-woody pulps. Cellulose nanocrystals (CNCs) were prepared using paper mulberry pulp, while quaternized cellulose nanofibers (Q-CNFs) and carboxymethylated cellulose nanofibers (CM-CNFs) were prepared using cotton lint mixed pulp (CLMP). The films were manufactured by adjusting the size of CNCs, zeta potential of CNFs, and CNC/CNF mixing ratio using a combined technique of vacuum-assisted and evaporation-induced self-assembly methods,depending on the type of nanocellulose. The thickness, transparency, and b* of the films were measured to determine the optimal manufacturing conditions. The films prepared with only the smallest CNC (Short-CNC) showed higher transparency than those prepared with a mixture of Short-CNC and the longest CNC (Long-CNC). The transparency of the films prepared with Short-CNC and Q-CNF decreased because of the flocs induced by the attractive interaction between them. Meanwhile, the films prepared with Short-CNC and CM-CNF showed high transparency because Short-CNC and CM-CNF comprised negative charges. The CNC/CM-CNF mixing ratio of 5:5 resulted in the highest transparency of the film. Therefore, highly transparent films suitable for solar cell substrates can be manufactured by combining CNCs and CM-CNFs.

Keywords

Solar cell substrate

transparency

transparent film

cellulose nanocrystal

cellulose nanofiber

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Information

Publisher :Korea Technical Association of The Pulp and Paper Industry
Publisher(Ko) :한국펄프종이공학회
Journal Title :Journal of Korea TAPPI
Journal Title(Ko) :펄프종이기술
Volume : 55
No :6
Pages :109-118
Received Date : 2023-11-24
Revised Date : 2023-12-13
Accepted Date : 2023-12-16
DOI :https://doi.org/10.7584/JKTAPPI.2023.12.55.6.109

Journal of Korea TAPPI ISSN:0253-3200(Print) 펄프종이기술

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