Prof. Wi Hyoung Lee Profile

Prof. Wi Hyoung Lee

at Konkuk Univ

SPIE Involvement:

Author

Publications (1)

This will count as one of your downloads.

You will have access to both the presentation and article (if available).

DOWNLOAD NOW

This content is available for download via your institution's subscription. To access this item, please sign in to your personal account.

Email or Username Forgot your username?

Password Forgot your password?

Show

Keep me signed in

No SPIE account? Create an account

Proceedings Article | 19 September 2017 Presentation

1D versus 2D growth of TIPS-pentacene in TIPS-pentacene/insulating polymer blends (Conference Presentation)

Wi Hyoung Lee

Proceedings Volume 10365, 103650F (2017) https://doi.org/10.1117/12.2274703

KEYWORDS: Polymers, Crystals, Field effect transistors, Organic semiconductors, Coating, Transistors, Semiconductors, Manufacturing, Polymer thin films, Natural surfaces

Read Abstract +

Organic semiconductor/insulator polymer blends have been widely used in the manufacturing process of field-effect transistors (FETs) to overcome the disadvantages of FETs based on organic semiconductor. In this study, phase-separation characteristics and structural developments of 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-pentacene)/insulating polymers were examined to enhance electrical properties of their blends for uses in active layers of FETs. Especially, phase-separation characteristics of TIPS-pentacene/insulating polymer blends were greatly affected by the processing condition such as spin coating time. Although TIPS-pentacene-top/insulating polymer-bottom vertically phase separated structures were formed onto the substrate regardless of spin-time, spin coating time governed growth mode of phase-separated TIPS-pentacene onto phase-separated insulating polymer. Excess residual solvent in short spin-coating time induces convective flow in a drying droplet, thereby resulted in one-dimensional (1D) growth of TIPS-pentacene crystals. On the other hand, optimum residual solvent in moderate spin coating time led to two-dimensional (2D) growth of TIPS-pentacene crystals. These 2D spherulites onto insulating polymer was quite advantageous for increasing field-effect mobility of FETs because of higher perfectness and coverage of TIPS-pentacene crystals compared to those of 1D crystals. In addition, when TIPS-pentacene was blended with various types of insulating polymers, critical spin-coating time was changed due to the different surface energy of the insulating polymers. Insulating polymer with lower surface energy was advantageous for increasing film formation time, thereby increasing time for phase-separation and crystallization.

My Library

You currently do not have any folders to save your paper to! Create a new folder below.

Folder Name

Folder Description

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks. You are receiving this notice because your organization may not have SPIE eBooks access.*

*Shibboleth/Open Athens users─please sign in to access your institution's subscriptions.

To obtain this item, you may purchase the complete book in print or electronic format on SPIE.org.

ORGANIZATIONAL
Sign in with credentials provided by your organization.

Organizational Username

Organizational Password

Show/Hide Password

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:

Non-members: ADD TO CART

Keywords/Phrases

Search In:

Publication Years