• Title/Summary/Keyword: inkjet printing

Search Result 277, Processing Time 0.028 seconds

Sol-gel Derived Nano-glass for Silicon Solar Cell Metallization (솔-젤법에 의해 제조된 실리콘 태양전지 전극형성용 나노 글래스)

  • Kang, Seong Gu;Lee, Chang Wan;Chung, Yoon Jang;Kim, Chang-Gyoun;Kim, Seongtak;Kim, Donghwan;Lee, Young Kuk
    • Current Photovoltaic Research
    • /
    • v.2 no.4
    • /
    • pp.173-176
    • /
    • 2014

  • We have investigated the seed layer formation of front side contact using the inkjet printing process. Conductive silver ink was printed on textured Si wafers with 80 nm thick $SiN_x$ anti reflection coating (ARC) layers and thickened by light induced plating (LIP). The inkjet printable sliver inks were specifically formulated for inkjet printing on these substrates. Also, a novel method to prepare nano-sized glass frits by the sol-gel process with particle sizes around 5 nm is presented. Furthermore, dispersion stability of the formulated ink was measured using a Turbiscan. By implementing these glass frits, it was found that a continuous and uniform seed layer with a line width of $40{\mu}m$ could be formed by a inkjet printing process. We also investigated the contact resistance between the front contact and emitter using the transfer length model (TLM). On an emitter with the sheet resistance of $60{\Omega}/sq$, a specific contact resistance (${\rho}_c$) below $10m{\Omega}{\cdot}cm^2$ could be achieved at a peak firing temperature around $700^{\circ}C$. In addition, the correlation between the contact resistance and interface microstructures were studied using scanning electron microscopy (SEM). We found that the added glass particles act as a very effective fire through agent, and Ag crystallites are formed along the interface glass layer.

  • https://doi.org/10.21218/CPR.2014.2.4.173 인용 PDF

Manufacturing of Ag Nano-particle Ink-jet Printer and the Application into Metal Interconnection Process of Si Solar Cells (Si 태양전지 금속배선 공정을 위한 나노 Ag 잉크젯 프린터 제작 및 응용)

  • Lee, Jung-Tack;Choi, Jae-Ho;Kim, Ki-Wan;Shin, Myoung-Sun;Kim, Keun-Joo
    • Journal of the Semiconductor & Display Technology
    • /
    • v.10 no.2
    • /
    • pp.73-81
    • /
    • 2011

  • We manufactured the inkjet printing system for the application into the nano Ag finger line interconnection process in Si solar cells. The home-made inkjet printer consists of motion part for XY motion stage with optical table, head part, power and control part in the rack box with pump, and ink supply part for the connection of pump-tube-sub ink tanknozzle. The ink jet printing system has been used to conduct the interconnection process of finger lines on Si solar cell. The nano ink includes the 50 nm-diameter. Ag nano particles and the viscosity is 14.4 cP at $22^{\circ}C$. After processing of inkjet printing on the finger lines of Si solar cell, the nano particles were measured by scanning electron microscope. After the heat treatment at $850^{\circ}C$, the finger lines showed the smooth surface morphology without micropores.

  • PDF KSCI

Inkjet Printing of Small Droplets Using M-shaped Waveforms (M-shaped 파형을 이용한 작은 액적의 잉크젯 프린팅)

  • Hong, Songeun;Choi, Jiho;Kim, Gieun;Park, Jongwoon
    • Journal of the Semiconductor & Display Technology
    • /
    • v.20 no.3
    • /
    • pp.51-56
    • /
    • 2021

  • Using an inkjet printing process, we have investigated a droplet formation of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) near the orifice of a piezoelectric inkjet head. With an attempt to form the smallest droplet without any satellites, we have applied various waveforms such as the unipolar, bipolar, and M-shaped waveforms. It is found that the droplet velocity and volume vary depending sensitively on the waveform width and voltage. Of those, the M-shaped waveform is shown to provide the smallest droplet volume, followed by the bipolar and then unipolar waveforms. The droplet printed on a PET film roll by the M-shaped waveform has the diameter as small as 46.1 ㎛. It is likely that the second short unipolar in the M-shape waveform increases the droplet velocity gradient, rendering the droplet smaller.

  • PDF KSCI