本文選題：晶體硅太陽能電池 + 背面電極�。� 參考：《中南大學(xué)》2014年碩士論文

【摘要】：摘要：太陽能作為無污染、可再生能源,具有廣闊的應(yīng)用前景和發(fā)展空間。對于晶體硅太陽能電池的研究已成了科學(xué)界和工程界的熱點。就目前研究和發(fā)展情況來看,針對晶體硅太陽能電池正極的研究越來越深入具體,而在背電極方面的研究幾乎還處于空白階段。因此,能研制出性能優(yōu)異的背面銀漿,實現(xiàn)太陽能電池生產(chǎn)技術(shù)的國產(chǎn)化,打破國外壟斷的被動局面,對我國科技與經(jīng)濟的發(fā)展來說意義深遠。本文對多晶體硅太陽能電池背面銀漿的制備與性能進行了研究,采用化學(xué)還原法制備了球形銀粉,采用機械球磨法制備了片狀銀粉,改變有機羧酸含量配制了不同的有機載體,主要討論了銀粉、有機載體以及電池燒結(jié)峰值溫度對背銀漿料燒結(jié)成膜效果和電池片性能的影響。研究結(jié)果具體如下： 1、采用不同形貌銀粉制備的背銀漿料燒結(jié)膜和電池片性能有所不同,片形銀粉制備的背面銀漿效果最好,電極燒結(jié)膜均勻致密,導(dǎo)電性好,電池片的平均光電轉(zhuǎn)換效率也最高,為17.430%；球形銀粉制備背銀漿料的各方面性能僅次于片形銀粉,電池片的平均光電轉(zhuǎn)換效率為17.315%；樹枝狀銀粉制備的背面銀漿效果最差,燒結(jié)膜孔洞大而多,無法形成良好的導(dǎo)電通道,表面方阻很大,附著力也很差,制得的多晶硅太陽能電池片的平均光電轉(zhuǎn)換效率最低,為15.733%。 2、采用三種不同分散性的片形銀粉制備背面銀漿和多晶硅太陽能電池片,結(jié)果表明,分散性差的銀粉制備的背銀燒結(jié)膜表面稀疏不致密,附著力不大,為3.37N,導(dǎo)電性一般,所得電池片的光電性能也較差,光電轉(zhuǎn)換效率僅為16.389%；分散性較好的銀粉制備的背電極燒結(jié)膜形貌有所改善,表面較平整致密,導(dǎo)電性變優(yōu),表面方阻為0.96mΩ/□,電池的平均光電轉(zhuǎn)換效率提高,為17.042%；而分散性很好的銀粉制得的背電極燒結(jié)膜形貌則很理想,各方面性能都最好,得到的電池片的平均光電轉(zhuǎn)換效率也最大,為17.437%。 3、對比五種不同振實密度的片形銀粉制備的背電極厚膜和電池片性能可知,振實密度最低(1.5g/cm3)的銀粉所制的背電極燒結(jié)膜質(zhì)量最差,電極膜附著力為2.46N,表面方阻值為2.86mΩ/□,電池的平均光電轉(zhuǎn)換效率較低,僅16.792%；振實密度增加,燒結(jié)膜形貌質(zhì)量提高,孔洞率降低,附著力提高,銀膜導(dǎo)電率有所下降,導(dǎo)電性能變好,電池光電轉(zhuǎn)換效率上升；當振實密度為3.5g/cm3時,附著力最大,為4.28N,電池的平均光電轉(zhuǎn)換效率最高,達到17.414%。 4、探討了有機載體中有機羧酸的加入量對背銀漿料燒結(jié)特性與電池片性能的影響,當不加有機羧酸時,背電極燒結(jié)膜質(zhì)量較差,孔洞較多且大,附著力也一般,為3.53N,所得電池片的平均光電轉(zhuǎn)換效率也較低,為17.120%；隨著有機羧酸的加入,對背銀電極的燒結(jié)形貌帶來了一定的改善,孔洞率降低,表面方阻降低,附著力提高,光電轉(zhuǎn)換效率增大,當有機羧酸含量(w)為1.22%時,平均光電轉(zhuǎn)換效率最大,為17.336%,當有機羧酸含量繼續(xù)增加后,燒結(jié)膜質(zhì)量又開始下降,附著力降低,表面方阻增大,光電轉(zhuǎn)換效率降低。 5、選用不同燒結(jié)峰值溫度得到了不同的背電極燒結(jié)膜,當燒結(jié)峰值溫度為730-C時,銀漿燒結(jié)不完全,燒結(jié)膜疏松不致密,有很大的孔洞,附著力也很小,僅為1.76N,電極表面方阻4.37mΩ/□,電池片的平均光電轉(zhuǎn)換效率也較低,僅16.067%；隨著燒結(jié)峰值溫度的升高,銀漿逐漸燒結(jié)完全,燒結(jié)膜質(zhì)量提升,當溫度在790℃時,得到的電池片性能最好,平均光電轉(zhuǎn)換效率也最高,為17.336%；溫度繼續(xù)升高后,由于過燒,電極致密度變差,燒結(jié)膜的質(zhì)量下降,當燒結(jié)溫度為820℃時,得到的電池片的平均光電轉(zhuǎn)換效率為17.258%。
[Abstract]:Abstract: as a pollution-free and renewable energy, solar energy has a broad application prospect and development space. The research on crystalline silicon solar cells has become a hot spot in the scientific and engineering circles. In the current research and development situation, the research on the positive pole of crystal silicon solar cell is becoming more and more detailed, and on the back electrode aspect. It is almost still in the blank stage. Therefore, it is possible to develop the back silver pulp with excellent performance, realize the localization of the solar cell production technology, break the passive situation of the foreign monopoly and have a profound significance to the development of China's science and technology and economy. Spherical silver powder was prepared by chemical reduction method. The flake silver powder was prepared by mechanical ball milling. Different organic carriers were prepared by changing the content of organic carboxylic acid. The effect of silver powder, organic carrier and the peak temperature of the battery on the sintering effect of silver back paste and the performance of the battery sheet were mainly discussed. The results are as follows:
1, the properties of the silver paste prepared by silver powder with different morphology are different. The silver powder prepared by the silver powder has the best effect on the back silver pulp, the electrode has a uniform densification, good electrical conductivity, and the average photoelectric conversion efficiency of the battery sheet is the highest, which is 17.430%. The properties of the silver paste prepared by spherical silver powder are second to the shape of silver. The average photoelectric conversion efficiency of the powder is 17.315%, the back silver pulp from the dendrimer silver powder is the worst, the cavern holes are large and large, and the good conduction channel can not be formed. The surface resistance is very large and the adhesion is very poor. The flat average photoelectric conversion efficiency of the polycrystalline silicon solar cell is the lowest, 15.733%.
2, three kinds of silver powder with different dispersivity are used to prepare the back silver pulp and polycrystalline silicon solar cell. The results show that the silver powder prepared by the dispersive silver powder is sparse and not dense, with little adhesion, 3.37N and electrical conductivity, and the photoelectric conversion efficiency is only 16.389%. The better morphology of the silver powder prepared by the back electrode is improved, the surface is more smooth and compact, the conductivity is better, the surface resistance is 0.96m OMEGA / *, the average photoelectric conversion efficiency of the battery is increased to 17.042%, while the high dispersive silver powder has the ideal morphology of the back electrode burning conjunctiva, which has the best performance in all aspects and the battery chips obtained in all aspects. The average photoelectric conversion efficiency is the largest, which is 17.437%.
3, compared with the performance of the back electrode thick film and battery film prepared by five different vibrating density silver powders, it is found that the lowest (1.5g/cm3) silver powder has the worst quality of the back electrode, the electrode membrane adhesion is 2.46N, the surface resistance value is 2.86m OMEGA / h, the average photoelectric conversion efficiency of the battery is lower, only 16.792%, and the vibratory density increases. Adding, the quality of the conjunctival morphology is improved, the hole rate is reduced, the adhesion strength is increased, the conductivity of the silver film decreases, the electrical conductivity is better and the photoelectric conversion efficiency of the battery rises. When the vibratory density is 3.5g/cm3, the adhesion is 4.28N, and the average photoelectric conversion efficiency of the battery is the highest, reaching 17.414%..
4, the effect of organic carboxylic acid on the sintering characteristics of silver paste and the performance of the battery sheet was discussed. When the organic carboxylic acid was not added, the quality of the back electrode was poor, the hole was more large and the adhesion was 3.53N. The average photoelectric conversion efficiency of the obtained battery was 17.120%, with the addition of organic carboxylic acid. When the content of organic carboxylic acid (W) is 1.22%, the average photoelectric conversion efficiency is 17.336%. When the content of organic carboxylic acid is increased, the quality of the organic carboxylic acid decreases and the adhesion is reduced. The surface resistance increases and the photoelectric conversion efficiency decreases.
5, different sintering peak temperature was selected for different back electrode burning conjunctiva. When the peak temperature was 730-C, the silver pulp was not completely sintered and the sintered film was loose and not dense. There were a lot of holes and little adhesion, only 1.76N, the surface resistance of the electrode was 4.37m OMEGA / *, and the average photoelectric conversion efficiency of the battery sheet was low, only 16.067%; with the burning. When the peak temperature rises, the silver pulp is gradually sintered and the quality of the sintered film is improved. When the temperature is 790, the performance of the battery is the best and the average photoelectric conversion efficiency is the highest, which is 17.336%. After the temperature continues to rise, the density of the electrode is worse and the quality of the sintered film decreases. When the sintering temperature is 820, the battery is obtained. The average photoelectric conversion efficiency of the film is 17.258%.
【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

【參考文獻】

相關(guān)博士學(xué)位論文 前1條

1 郭桂全;太陽能電池正面銀漿的制備及其性能研究[D];中南大學(xué);2012年

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本文編號：2011119