• Title/Summary/Keyword: Infrared curing

Search Result 63, Processing Time 0.019 seconds

Research on color coating technology of solution process method using spin coating (스핀 코팅을 이용한 용액 공정 방식의 컬러 코팅 기술 연구)

  • Seongmin Lim;Hyeon-Sik Ahn;Yoonseuk Choi
    • Journal of IKEEE
    • /
    • v.27 no.1
    • /
    • pp.78-84
    • /
    • 2023
  • In this paper, front color glass for Building Integrated Photovoltaic (BIPV) system was implemented by spin coating method using color solution. Solutions suitable for color solutions were investigated using pearlescent pigments and various solutions to implement color glass. One of investigated solutions, NOA 63 and NOA 65, which are ultraviolet light curing agents, were able to implement color glass with superior coating properties and color reproducibility than other solutions. Color glass realized by spin coating with a NOA 65 based color solution showed high transmittance of 86% in the visible and near-infrared wavelength bands, and the change in optical properties of color glass over time was insignificant, making it a suitable material for realizing color glass for BIPV Suitable as a color solution. The solution process method using the spin coating method is expected to facilitate the manufacturing process of front color glass for BIPV as it can produce color glass more easily and quickly than the existing physical deposition method or color glass manufacturing process using nanoparticles.

A Study on Correlation between Busbar Electrodes of Heterojunction Technology Solar Cells and the Peel Strength (실리콘 이종접합 태양전지의 버스바 전극 두께와 접합강도의 상관관계)

  • Da Yeong Jun;Jiyeon Moon;Godeung Park;Zulmandakh Otgongerel;Hyeryeong Nam;Oryeon Kwon;Hyunsoo Lim;Sung Hyun Kim
    • Current Photovoltaic Research
    • /
    • v.11 no.2
    • /
    • pp.44-48
    • /
    • 2023
  • In heterojunction technology (HJT) solar cells, low-temperature curing paste is used because the passivation layer deteriorates at high temperatures of 200℃ or higher. However, manufacturing HJT photovoltaic (PV) modules is challenging due to the weak peel strength between busbar electrodes and cells after soldering process. For this issue, the electrode thicknesses of the busbars of the HJT solar cell were analyzed, and the peel strengths between electrodes and wires were measured after soldering using an infrared (IR) lamp. As a result, the electrodes printed by the screen printing method had a difference in thickness due to screen mask. Also, as the thickness of the electrode increased, the peel strength of the wire increased.

A STUDY ON THE TENSILE STRENGTH OF REINFORCED VENEERING COMPOSITE RESINS FOR CROWN (강화형 치관용 복합레진의 인장강도에 관한 연구)

  • Ahn, Seung-Geun;Kang, Dong-Wan
    • The Journal of Korean Academy of Prosthodontics
    • /
    • v.38 no.2
    • /
    • pp.226-241
    • /
    • 2000
  • Recently a new generation of crown and bridge veneering resins containing submicron glass fillers was introduced. These ultrasmall particle hybrid composite materials distinguish themselves, compared with conventional microfill crown and bridge resins, through improved mechanical properties. It is claimed that these composites are suitable for metal free crowns and even bridges using fiber reinforcement. The purpose of this study was to evaluate the effect of thermal cycling on the tensile strength of the following veneering composites: Artglass(Heraeus Kulzer Co., Wehrheim, Germany), Estonia(Kuraray Co.. Japan), Sculpture(Jeneric Pentron Co., Wallingford, U.S.A.), and Targis(Ivoclar Co., Schaan Liechenstein). According to manufacturer's instructions, rectangular tensile test specimens measuring $1.5{\times}2.0{\times}4.5mm$ were made using a teflon mold. Whole specimens were divided into two groups. One group was dried in a desiccator at $25^{\circ}C$ for 10 days, and another group was subjected to thermal cycling($10,000{\times}$) in water($5/55^{\circ}C$). All test specimens were placed in a universal testing machine and loaded until fracture with a crosshead speed of 0.5mm/min. Weibull analysis and Tukey's test were used to analyze the data. The fracture surfaces of specimens were observed in SEM and the aliphatic C=C absorbance peak of Estenia and Targis resin was analyzed using Fourier transform infrared(FTIR) spectroscopy. Within the limitations imposed in this study, the following conclusions can be drawn: 1. Both in drying condition and thermal cycling condition, the highest tensile strength was observed in Estenia testing group(p<0.05). 2. The strength data were at to single-mode Weibull distribution, and the Weibull modulus of all veneering composite resin specimens increased after thermal cycling treatment. 3. After thermal cycling test, the highest tensile strength was observed in the Estenia group, and the lowest value was observed in the Targis group. The tensile strength values showed the significant differences between each group(p<0.05) 4. The aliphatic C=C absorbance peak of Estonia and Targis resin was decreased after light curing, and there was no distinct change after thermal cycling.

  • PDF