Investigation of soldering for crystalline silicon solar cells

Yang, Hong; Wang, He; Cao, Dingyue

doi:10.1108/ssmt-04-2015-0015

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…In addition, power loss also inevitably occurs during the process of encapsulating solar photovoltaic modules [12][13][14]. The factors contributing to the loss could be divided into three broad categories: optic, geometric and electric factors.…”

Section: Introductionmentioning

confidence: 99%

Method and Equipment for Reducing the Efficiency Degradation of Monocrystalline Passivated Emitter and Rear Cells

Fan,

Shen,

Zhang

et al. 2024

Energies

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Infrared soldering as a step in module encapsulation, which would cause light-induced degradation (LID) and light- and elevated-temperature-induced degradation (LeTID) effects on solar cells, may cause efficiency mixing among solar cells that were originally in the same grade within the module after soldering. Furthermore, the problem of bright and dark regions would appear, which would result in a decrease in the CTM value. Current injection is considered to be one of the effective methods to solve the above problem. However, after the current injection treatment, there is still a 10% probability of the appearance of bright and dark regions in modules. In this work, we first adopted the conventional current injection process in monocrystalline passivated emitter and rear cells (PERCs). The effects of injected currents, temperature and time were systematically optimized, and cells with or without the current injection under the optimal parameters were illuminated with 1 sun at 85 °C for 25 h. Secondly, a piece of equipment was developed to further stabilize the performance of solar cells and improve the CTM value. The results showed that the best current injection parameters were a temperature of 185 °C, an injected current of 11 A and an injection time of 770 s. Compared with the cells without any pretreatment, the relative changes in the η, Voc, Isc and FF of the cells pretreated with the optimal conditions mentioned above were 0.23%, 0.08%, 0.02% and 0.08% larger, respectively, after 25 h of degradation. Then, solar cells processed by current injection were processed with our equipment, and the probability of a problem occurring was reduced from 10% to 2%. Meanwhile, the CTM value increased by 0.4%. Finally, a balance mechanism between H0 and H0-X has been proposed to explain the mechanism of the equipment.

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Section: Introductionmentioning

confidence: 99%

Method and Equipment for Reducing the Efficiency Degradation of Monocrystalline Passivated Emitter and Rear Cells

Fan,

Shen,

Zhang

et al. 2024

Energies

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“…Induction brazing has been successfully introduced in the production of superconducting tapes [7] aluminum pipes and high-pressure pipes [8]. In the production of electronic devices and solar cell components, methods based on induction brazing have also been used quite successfully [9][10][11]. In the aerospace industry induction brazing technology is used to produce waveguide paths [12].…”

Section: Introductionmentioning

confidence: 99%

Algorithms for selecting the operating mode of the technological process of waveguide paths induction brazing

Tynchenko¹,

Anton²,

Кукарцев³

et al. 2021

J Appl Eng Science

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The article presents the development of a method for selecting the operating mode of the induction brazing process based on intelligent methods. The use of intelligent methods is due to the presence of uncertain conditions caused by the complexity of the initial setting of the technological parameters of the induction brazing process, the error of measuring instruments, and the human factor. The use of smart methods will make it possible to reduce the impact of negative factors, remove uncertainty, and adequately perform the initial set of technological parameters for the induction brazing process. Artificial neural networks, the fuzzy controller and the neural fuzzy controller have been chosen as the smart methods in this work. The article gives a brief overview of the above methods, provides a rationale for the choice of intelligent methods, and also compares their effectiveness. Based on the results of the experimental efficiency check, the most suitable method for determining the choice of induction brazing process operation is proposed.

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“…The interconnected technology of electronics and photovoltaic manufacturing has been dominated by tin–lead alloy solders since the very beginning [1,2,3]. Tin–lead alloy solders, which provide a conductive path to complete the circuit, have desirable electrical, mechanical, and thermal properties [4,5,6,7,8,9,10] during the connection process of circuit elements and solar cells [11,12]. However, with the rapid consumption of electronic products and photovoltaic modules, the environmental pollution caused by the related wastes, especially lead, is becoming increasingly serious.…”

Section: Introductionmentioning

confidence: 99%

A Novel Preparation Method of Electrically Conductive Adhesives by Powder Spraying Process

Dong

et al. 2019

Materials

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In a conventional electrically conductive adhesive (ECA) preparation process, typical ECAs are made by adding an appropriate amount of electrically conductive fillers, such as silver, into a polymer matrix, such as epoxy resin, to form a uniformly dispersed mixture by mixing and stirring operations. However, during the preparation process, secondary pollution and mass loss are caused by the vigorous mixture process. At the same time, the stirring operation introduces many small and stable bubbles, which affect the electrical conductivity of the ECAs. In light of these problems with the conventional preparation of ECAs, we developed a novel ECA preparation method that employs a powder spraying process: silver flakes are sprayed into the epoxy resin with a certain mass fraction to form formulated pastes. The as-prepared ECAs exhibited excellent properties compared with those prepared by the conventional process. This proves that the powder spraying process is feasible and superior to the conventional process.

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Investigation of soldering for crystalline silicon solar cells

Cited by 5 publications

References 15 publications

Method and Equipment for Reducing the Efficiency Degradation of Monocrystalline Passivated Emitter and Rear Cells

Method and Equipment for Reducing the Efficiency Degradation of Monocrystalline Passivated Emitter and Rear Cells

Algorithms for selecting the operating mode of the technological process of waveguide paths induction brazing

A Novel Preparation Method of Electrically Conductive Adhesives by Powder Spraying Process

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