文献类型：期刊文献

英文题名：Toward 90 mu m Superthin Transparent Wood Film Impregnated with Quantum Dots for Color-Converting Materials

作者：Zou, Miao[1] Chen, Yongping[1] Chang, Liang[1] Cheng, Xianbao[1] Gao, Li[1] Guo, Wenjing[1] Ren, Yiping[1] Luo Shupin[1] Tang, Qiheng[1]

第一作者：Zou, Miao

通信作者：Tang, QH[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2022

卷号：10

期号：6

起止页码：2097-2106

外文期刊名：ACS SUSTAINABLE CHEMISTRY & ENGINEERING

收录：;EI(收录号：20220711647837);Scopus(收录号：2-s2.0-85124627781);WOS:【SCI-EXPANDED(收录号:WOS:000755206200012)】；

基金：We appreciate the Young Scientists Fund of the National Natural Science Foundation of China (31800484) and the National Key R&D Program of China (2021YFD2200604) .

语种：英文

外文关键词：Flexible transparent wood; Quantum dots; Microstructure; Harsh environment; Color-converting film

摘要：Flexible quantum dots (QDs) photoluminescent films are emerging as a new generation of light-emitting materials. Such films are commonly fabricated by dispersing QDs on flexible plastic films or impregnating them into porous layers due to the vulnerability of QDs to water and oxygen. However, these substrates are mainly made from petroleum-based materials, causing serious environmental issues. Here, for the first time, we propose a top down strategy to prepare QDs photoluminescence films from a superthin, superflexible, and transparent wood film. The top-down method involved several steps. First, a wood film was produced using horizontal veneer slicing technology from natural wood. Second, the wood film underwent a delignification process and the impregnation of QDs along with epoxy resin. The resulting superthin and transparent photoluminescent QDs wood film had a record thinness of 90 mu m, a record curvature radius of 1.3 mm, a high transmittance of approximately 90%, and a high fluorescence intensity. Further, we applied the QDs superthin film to fabricate color-converting films to emit red, blue, and green lights under ultraviolet radiation or excited by blue light emitting diodes. In addition, the film could also resist water, alkaline solutions, salt solutions, and organic solvents for 10 days without losing light-emitting abilities. This simple and fast method provides an environmentally sustainable solution for the design of green, flexible photoelectric devices.