本文選題：方塊電阻 + 柵線寬度　； 參考：《中南大學(xué)》2014年碩士論文

【摘要】：摘要：高方塊電阻發(fā)射結(jié)是晶硅太陽能電池的發(fā)展趨勢,相對于常規(guī)方阻而言,其表面少子復(fù)合效應(yīng)較弱,短波光譜響應(yīng)好,有助于提升太陽能電池的光電轉(zhuǎn)換效率。然而目前晶硅太陽能電池正面金屬化的材料正銀漿料基本上只適合于常規(guī)方塊電阻,因此研究制備一種適合高方阻晶硅太陽能電池的新型國產(chǎn)化正銀漿料意義重大。本文緊緊圍繞高方阻晶硅太陽能電池正面銀電極材料的技術(shù)問題,重點研究了有機載體中各組分含量對于正銀漿料的性能影響,柵線電極寬度與方塊電阻的匹配性以及燒結(jié)工藝的優(yōu)化問題。利用液態(tài)磷源擴散法制備不同方塊電阻的多晶硅電池片,研究了方塊電阻對于短路電流、開路電壓、填充因子以及光電轉(zhuǎn)換效率的影響；利用絲網(wǎng)印刷技術(shù),研究了柵線電極寬度對于短路電流、開路電壓、填充因子以及光電轉(zhuǎn)換效率的影響；研究了有機載體中各組分的含量對于正銀漿料的揮發(fā)性能、絲網(wǎng)印刷性能、柵線電極的高寬比、電極的致密度以及光電轉(zhuǎn)換性能的影響；利用紅外快速燒結(jié)技術(shù),研究了峰值燒結(jié)溫度,帶速及升溫速率對于電極的致密度及光電轉(zhuǎn)換性能的影響。研究結(jié)果主要如下所列： (1)方塊電阻對多晶硅太陽能電池片光電轉(zhuǎn)換性能產(chǎn)生重大影響。隨著方塊電阻從65Ω/□增加到90Ω/□,短路電流和開路電壓分別提升了4.85%、3.23%,填充因子下降了4.15%,光電轉(zhuǎn)換效率先增加后減小,在80Ω/□時達到最高的17.33%。 (2)細(xì)柵線電極寬度對于多晶硅電池片的短路電流和填充因子有重大影響。隨著網(wǎng)版設(shè)計寬度從90μm降低到40μm過程中,短路電流減小了1.98%,填充因子升高了5.15%,光電轉(zhuǎn)換效率先增加后減小。三主柵線設(shè)計相對于兩主柵而言,由于減小了電流從副柵線傳輸?shù)街鳀啪€電極的距離,增加了電流的收集效率,短路電流升高了0.25%,填充因子增加了0.25%,光電轉(zhuǎn)換效率得到提升,可達17.45%。 (3)有機載體的組成對于正銀漿料的性能有很大影響。本文優(yōu)選出松油醇、丁基卡必醇及丁基卡必醇醋酸酯三種揮發(fā)性能不同的有機溶劑按照60wt%、30wt%、10wt%的比例組成混合溶劑,該混合溶劑在低溫下較難揮發(fā),在烘干溫度下?lián)]發(fā)量較大；增稠劑乙基纖維素的最佳含量為6wt%,此時正銀漿料粘度為266Pa·S,印刷所得正面電極輪廓分明,分辨率高；觸變劑蓖麻油的最佳含量為3wt%,印刷燒結(jié)所得電極高寬比為0.288；正銀漿料中有機載體的最佳含量為11wt%,其組成配方為有機溶劑含量89.5wt%,乙基纖維素含量6wt%,蓖麻油含量3wt%,其他添加劑1.5wt%。此時正銀漿料粘度為268Pa·S,印刷燒結(jié)后所得電極高寬比高,各項性能指標(biāo)均較優(yōu),光電轉(zhuǎn)換效率可達17.58%。 (4)燒結(jié)工藝參數(shù)對于多晶硅電池片的光電轉(zhuǎn)換性能產(chǎn)生重大影響。本論文優(yōu)化出的最佳燒結(jié)工藝參數(shù)為峰值溫度800℃,燒結(jié)帶速660cm/min,升溫速率65.7℃/s,此時燒結(jié)所得電極致密化好,各項性能指標(biāo)良好,光電轉(zhuǎn)換效率可達17.75%。
[Abstract]:Abstract: high square resistance emitter is the development trend of crystalline silicon solar cells. Compared with conventional square resistance, the composite effect is weak, and the response of the short wave spectrum is good. It is helpful to improve the photoelectric conversion efficiency of the solar cell. However, the positive silver paste of the crystalline silicon solar cell is basically only suitable for the silicon solar cell. It is of great significance to study and prepare a new type of homemade positive silver paste suitable for high resistance crystalline silicon solar cells. This paper focuses on the technical problems of the silver electrode materials of high square resistance crystalline silicon solar cells, and focuses on the effects of the content of each component in the organic carrier on the performance of the positive silver paste, and the grid wire electrode. The matching of width to block resistance and the optimization of sintering process. The effect of block resistance on short circuit current, open circuit voltage, filling factor and photoelectric conversion efficiency is studied by using liquid phosphorus source diffusion method. The width of grid electrode is studied by screen printing technology. The effects of short circuit current, open circuit voltage, filling factor and photoelectric conversion efficiency were studied. The effects of the content of each component in organic carrier on the volatilization performance of the positive silver paste, the screen printing performance, the height width ratio of the grid electrode, the density of the electrode and the photoelectric conversion performance were studied. The peak burning was studied by the rapid infrared sintering technology. The effects of junction temperature, band velocity and heating rate on the density and photoelectric conversion properties of electrodes are summarized as follows:
(1) the block resistance has a significant influence on the photoelectric conversion performance of the polysilicon solar cell. With the increase of the block resistance from 65 Omega to 90 OMEGA / *, the short circuit current and the open circuit voltage are increased by 4.85%, 3.23%, the filling factor is decreased by 4.15%, the photoelectric conversion efficiency increases first and then decreases, and the highest 17.33%. is reached at 80 OMEGA /.
(2) the width of the fine grid electrode has a significant influence on the short circuit current and the filling factor of the polysilicon battery. With the design width of the net plate reduced from 90 to 40 mu, the short circuit current is reduced by 1.98%, the filling factor is increased by 5.15%, the photoelectric conversion efficiency is increased first and then decreased. The three main grid line design is reduced to the two main gate. The distance of the current from the secondary gate line to the main grid electrode increases the collection efficiency of the current, the short circuit current increases by 0.25%, the filling factor increases by 0.25%, the photoelectric conversion efficiency is improved, up to 17.45%.
(3) the composition of the organic carrier has a great influence on the performance of the positive silver paste. In this paper, three kinds of organic solvents with different volatilization properties of release of pine oil alcohol, Ding Jika and butylacetol acetate are selected according to the proportion of 60wt%, 30wt% and 10wt%. The mixed solvent is more difficult to volatilize at low temperature and the volatilization is larger at the drying temperature. The optimum content of the thickening agent ethyl cellulose is 6wt%, at this time the viscosity of the positive silver paste is 266Pa S, the contour of the positive electrode is clear, the resolution is high, the optimum content of the thixotropic oil is 3wt%, the ratio of the electrode height to width is 0.288, and the optimum content of the airborne body is 11wt% in the positive silver paste, and the composition formula is organic. The content of the solvent is 89.5wt%, the content of ethyl cellulose is 6wt%, the content of castor oil is 3wt%, and the viscosity of the other additive 1.5wt%. is 268Pa. S at this time. The electrode height width ratio is high after the printing sintering, all the performance indexes are better, the photoelectric conversion efficiency can reach 17.58%..
(4) the sintering process parameters have great influence on the photoelectric conversion performance of the polysilicon battery. The optimum sintering parameters are the peak temperature 800 C, the sintering speed 660cm/min and the heating rate of 65.7 /s. The electrode has a good densification, good properties of various properties, and the photoelectric conversion efficiency can reach 17.75%.

【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM914.4

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