高等学校化学学报2023，Vol.44Issue(9)：218-230,13.DOI:10.7503/cjcu20230185
β-丙氨酸作为有机太阳能电池双重修饰添加剂的研究
Beta-alanine as a Dual Modification Additive in Organic Solar Cells
摘要
Abstract
This work presents a novel approach to modify the interface of organic solar cells(OSCs)by using beta-alanine(β-alanine)which has a hydroxyl(—OH)/carboxyl group(—COOH)group on one side and amine(—NH2)on the other side.As a dual modifier approach,β-alanine was applied to both the hole-transporting layer(HTL,PEDOT∶PSS)and electron-transporting layer(ETL);PFN-Br was added in the same device through a simple solution-processed technique,resulting in the synthesis of new interface layers.β-alanine is soluble in polar aqueous solvents,and their soluble components in this work are methanol and water.Dual modification approach improved the power conversion efficiency(PCE)of PM6∶Y6 solar cells,increasing from 14.99%to 15.78%among with a single-sided approach.The hydrophobicity of both layers was enhanced as confirmed by contact angle and FTIR measure-ments,which blocked moisture and oxygen from interacting with their respective electrodes.The surface morphology was analyzed using AFM.The results showed that the amine group of β-alanine interacted with the—SO-3 group of PSS as well as with the bromine halogen(Br?)ion of PFN-Br,which reduced their concentration which elevated the hydrophobicity and improved the stability of the OSCs.Furthermore,the carrier mobilities for both the modified devices were improved,which was confirmed by the space-charge-limit current(SCLC)measurements.关键词
β-丙氨酸/添加剂/界面改性/传输层/有机太阳能电池Key words
Beta-alanine/Additive/Dual-modification/Transporting layer/Organic solar cell分类
化学化工引用本文复制引用
Zafar Saud uz,张伟超,杨朔,李世麟,张莹玉,张渊,张弘,周惠琼..β-丙氨酸作为有机太阳能电池双重修饰添加剂的研究[J].高等学校化学学报,2023,44(9):218-230,13.基金项目
国家自然科学基金(批准号:52273245)、中国科学院战略性先导科技专项(批准号:XDB36000000)和中国科学院-世界科学院校长博士奖学金计划项目资助.Supported by the National Natural Science Foundation of China(No.52273245),the Strategic Priority Research Program of Chinese Academy of Sciences(No.XDB36000000)and the Chinese Academy of Sciences-the World Academy of Sciences(CAS-TWAS)President's Ph.D.Fellowship Program. （批准号:52273245）
