Novel nonlinear optical material with poly(3-hexylthiophene) thin film prepared on quartz glass surface modified by self-assembled monolayer

Shizuyasu Ochiai; Suguru Mototani; Jayaraman Ramajothi; Kenzo Kojima; Teruyoshi Mizutani

doi:10.1117/12.792978

2 September 2008 Novel nonlinear optical material with poly(3-hexylthiophene) thin film prepared on quartz glass surface modified by self-assembled monolayer

Shizuyasu Ochiai, Suguru Mototani, Jayaraman Ramajothi, Kenzo Kojima, Teruyoshi Mizutani

Author Affiliations +

Proceedings Volume 7049, Linear and Nonlinear Optics of Organic Materials VIII; 70490S (2008) https://doi.org/10.1117/12.792978
Event: Photonic Devices + Applications, 2008, San Diego, California, United States

Abstract

The third-order nonlinear optical properties of regioregular poly(3-hexylthiophene) (RR-P3HT) thin films prepared on fused glass substrate were evaluated. The surface modification by hexamethyldisilazane (HMDS) and octadecyltrichlorosilane (ODTS) was performed on the glass substrate to form self-assembled monolayer (SAM) layers. The formation of SAM layers on the glass substrate increase the contact angle of the solution and the optical property of the RR-P3HT thin films is enhanced due to the excellent orientation and alignment of the thin film. The π-conjugated macromolecule thin films can be prepared by spin-coating and drop-casting methods and the structure and orientation alignment of thin films can be controlled by the solution processing and deposition techniques. The nonlinear optical property, third-harmonic generation of RR-P3HT thin films has been evaluated by Maker-fringe method. The third-order nonlinear optical susceptibilities χ⁽³⁾ (-3ω; ω, ω, ω) of drop-cast RR-P3HT thin films on quartz glass substrate were estimated from optical third-harmonics (TH) intensity measurement. An Nd:YAG laser with a wavelength of 1064 nm, pulse width of 5 ns and a repetition frequency of 10 Hz was used to evaluate the TH intensity. The effect of surface modification of quartz glass substrate by HMDS and ODTS on the RR-P3HT film structure was also investigated. The orientation alignment and crystallinity of the RR-P3HT thin films were evaluated using X-ray diffraction (XRD) and UV-vis absorption spectra. The UV-vis and XRD profile reveals the better orientation and crystallinity of the RR-P3HT thin film after surface modification by HMDS and ODTS. Moreover the incident angle dependences of third harmonic (TH) intensity was measured and the TH intensity of RR-P3HT thin film prepared on glass substrate with SAM layer was found to higher than that of non-treated substrate. The SAM layers significantly enhances the optical property of the material and the third-order nonlinear optical susceptibility (χ⁽³⁾) of RR-P3HT thin films on quartz glass surface modified by ODTS is 1.90 × 10^-8 esu. The third-order nonlinear optical susceptibility (χ⁽³⁾) of RR-P3HT thin film was found to higher than poly(p-phenylenevinylene) (PPV).

Citation Download Citation

Shizuyasu Ochiai, Suguru Mototani, Jayaraman Ramajothi, Kenzo Kojima, and Teruyoshi Mizutani "Novel nonlinear optical material with poly(3-hexylthiophene) thin film prepared on quartz glass surface modified by self-assembled monolayer", Proc. SPIE 7049, Linear and Nonlinear Optics of Organic Materials VIII, 70490S (2 September 2008); https://doi.org/10.1117/12.792978

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Thin films

Glasses

Head-mounted displays

Quartz

Polymers

Nonlinear optics

Absorption

Show All Keywords

Keywords/Phrases

Search In:

Publication Years