http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Otgongerel Zulmandakh,Moon Jiyeon,Jun Da Yeong,Park Godeung,Nam Hyeryeong,Kwon Oryeon,Lim Hyunsoo,Kim Sung Hyun 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.83 No.6
Nowadays, as wafer sizes continue to increase in the solar industry, the use of half-cut cells has gained attention as a means of increasing the current output by reducing resistive losses. The laser scribing technology cannot increase the output power, as the laser process can cause losses due to laser-induced damages. Therefore, laser scribing losses have a more substantial infuence on the photovoltaic electrical characteristic. It is signifcantly impacted by high-efciency solar cells such as heterojunction technology (HJT) and passivated contact solar cells. Currently, infra-red (IR) and non-destructive cutting (NDC) technology are both very useful cutting technologies for halved solar cells. IR technology has been already known conventional scribing method and has been considerably researched. However, how NDC cutting causes damage and the critical factors to reduce the damage still lack comprehensive research. Hence, in this research, we studied how diferent laser-cutting conditions afect the electrical characteristics of half-cut HJT solar cells. Firstly, IR laser scribing at the front and rear surfaces of HJT cells was demonstrated to compare surface damage dependence. Next, we exploited state-of-the-art cutting technology NDC with various cutting conditions, such as laser scribing powers and scan speeds. The results show that NDC cutting technology shows that the second laser power and scan speeds impacted output performance. Therefore, the NDC method shows a higher power efciency than conventional IR scribing technology, with improvements of 2.6% in fll factor and 0.63 W in output power.
실리콘 이종접합 태양전지의 버스바 전극 두께와 접합강도의 상관관계
전다영,문지연,박고등,Zulmandakh Otgongerel,남혜령,권오련,임현수,김성현 한국태양광발전학회 2023 Current Photovoltaic Research Vol.11 No.2
In heterojunction technology (HJT) solar cells, low-temperature curing paste is used because the passivation layer deteriorates at high temperatures of 200°C 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.
BIPV 적용을 위한 컬러 필름 기반의 출력 특성 연구
남혜령,문지연,전다영,박고등,Zulmandakh Otgongerel,권오련,임현수,김성현 한국태양광발전학회 2023 Current Photovoltaic Research Vol.11 No.2
Expanding the supply of BIPV is crucial to strengthening the competitiveness of the photovoltaic industry and achieving Nationally Determined Contributions through the zero-energy building mandatory policy. BIPV is a technology that integrates into the building envelope to generate electricity and provide functions as a building material. It is suitable for domestic environments with many high-rise buildings due to the narrow land area and urbanization. To expand the supply of BIPV, economics, safety, and aesthetics must be ensured. In this study, a color BIPV module with a color PET film applied as a front material was manufactured for aesthetic and economic feasibility. The relationship between power output and transmittance according to color was analyzed. By analyzing the power output of the module and the transmittance of the film, the wavelength band (transmittance reduction band) that has the greatest effect on efficiency was analyzed regarding the color of the film. The red film showed the narrowest transmittance reduction band and the lowest degree of decrease in transmittance, making it ideal for minimizing the efficiency decrease rate compared to existing ones.
저온 경화 은 페이스트 용 아크릴계 바인더의 다양한 개시제의 영향에 관한 연구
문지연,임현수,박고등,남혜령,전다영,Otgongerel Zulmandakh,권오련,김성현 한국태양에너지학회 2023 한국태양에너지학회 논문집 Vol.43 No.5
In heterojunction (HJT) solar cells, an amorphous silicon passivation layer is attached to the top and bottom of a crystalline silicon layer. HJT solar cells are manufactured at approximately 200°C because the structure of amorphous Si:H changes at high temperatures. Therefore, the silver paste utilized as an electrode on HJT solar cells should be subsequently cured at low temperatures below 200°C. In addition, the electrode requires good conductivity even at low curing temperatures. An initiator in the binder is crucial for the production of silver paste capable of low-temperature curing. This study investigated the effects of various initiators on the characteristics of a binder and silver paste that can be cured at low temperatures. Differential scanning calorimetry (DSC) and thermal gravimetric analysis (TGA) were operated to investigate the initiation and thermal decomposition properties of binders. The relationship between gel contents and the electrical conductivity of cured pastes was explored to reveal the impact of the curing ratio on electrical conductivity. The appropriate utilization of the initiator resulted in a high curing rate, which in turn increased the electrical conductivity.