Blue spectral shift of P3HT organic film by KrF excimer laser ablation

Li Jiang; Xiaohui Bao; Yoshihisa Uchida; Jingnan Liu; Y. P. Kathuria; Hideo Furuhashi; Yoshiyuki Uchida

doi:10.1117/12.840322

24 November 2009 Blue spectral shift of P3HT organic film by KrF excimer laser ablation

Li Jiang, Xiaohui Bao, Yoshihisa Uchida, Jingnan Liu, Y. P. Kathuria, Hideo Furuhashi, Yoshiyuki Uchida

Proceedings Volume 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration; 75090F (2009) https://doi.org/10.1117/12.840322
Event: International Conference on Optical Instrumentation and Technology, 2009, Shanghai, China

Abstract

A technique for morphology control of self-assembled organic films based on laser ablation is presented. The regioregular poly 3-hexylthiophene (RR-P3HT) films prepared by using drop casting method and spin coating method are irradiated and ablated by the ultraviolet KrF excimer laser. Absorption spectra and XRD profiles of the films are investigated. For spin coated films, Blue absorption spectral shift is observed; For drop cast films, Blue shift in the absorption spectra, accompanied with the disappearance of the peak intensity of XRD profiles, are observed. The results indicate that molecular structure has been changed due to photo-thermal effect and molecule cutting effect of laser ablation.

Citation Download Citation

Li Jiang, Xiaohui Bao, Yoshihisa Uchida, Jingnan Liu, Y. P. Kathuria, Hideo Furuhashi, and Yoshiyuki Uchida "Blue spectral shift of P3HT organic film by KrF excimer laser ablation", Proc. SPIE 7509, 2009 International Conference on Optical Instruments and Technology: Optoelectronic Devices and Integration, 75090F (24 November 2009); https://doi.org/10.1117/12.840322

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