Enhancing efficiency with fluorinated interlayers in small molecule organic solar cells

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/103377

Title:	Enhancing efficiency with fluorinated interlayers in small molecule organic solar cells
Authors:	張勝雄;Han, Hsieh-Cheng;Tseng, Chi-Ang;Du, Chan-Yi;Ganguly, Abhijit;Chong, Cheong-Wei;Wang, Sheng-Bo;Lin, Chi-Feng;Chang, Sheng-Hsiung;Su, Chao-Chin;Lee, Jiun-Haw;Chen, Kuei-Hsien;Chen, Li-Chyong
Contributors:	理學院光電科學與工程學系
Keywords:	Devices;Fluorination;Pentacene;Performance enhancement;PFA;Photovoltaic cells;Solar cells;Three dimensional
Date:	2012-11-21
Issue Date:	2026-04-23 11:29:17 (UTC+8)
Publisher:	Royal Society of Chemistry
Abstract:	摘要： This study presents a simple approach to improve the performance of small molecule based organic solar cells (OSCs) by inserting a fluorinated buffer layer (e.g., PFAS) at the hetero-interface of bilayer devices. As demonstrated in this work, the PFAS modification reduces the surface energy of the conventional PEDOT : PSS photoanode and results in a significant improvement in the pentacene based OSC. The passivated PEDOT : PSS surface after PFAS modification has a lower interface energy with pentacene and facilitates 3D single crystalline (dendritic-like) phase pentacene growth. Concurrently, the accumulated negative charges of the fluorinated PFAS layer result in the development of interfacial dipole moments that in turn lead to an enhanced built-in potential across the devices, and consequently enhanced hole transport efficiency. Improved performance of the modified OSCs is evident from the similar to 97% enhancement in efficiency from 0.88% to 1.73%, along with the open-circuit voltage improvement from 0.29 to 0.42 V. As well as improving the photovoltaic performance, the PFAS treatment also enhances the stability of the device under high temperature annealing, which is essential in the fabrication process. 出版日期： 2012-11-21 出處： Journal of materials chemistry, 2012-11, Vol.22 (43), p.22899-22905 資源來源： Alma/SFX Local Collection 識別號： ISSN: 0959-9428 識別號： EISSN: 1364-5501 識別號： DOI: 10.1039/c2jm34091g
Appears in Collections:	[Department of Optics and Photonics] journal & Dissertation

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