摘要
为了解决含铅导电银浆引起的严重环境污染问题,通过调节玻璃料配比制备了具有不同软化点的无铅玻璃粉。制成导电银浆后,测试了其对晶体硅太阳能电池光电性能的影响。研究了银粉粒径和烧结温度对电池光电性能的影响。研究结果表明:具有低软化点(360℃)的无铅玻璃粉制备的导电银浆有更好的光电性能。微米级和纳米级共混的银粉具有优良的导电性能。选择最佳银粉粒径和烧结温度,可将晶硅太阳能电池的光电转换效率提高至18. 68%,填充因子超过76. 9%。
To solve the serious environmental pollution problem caused by lead conductive silver paste,the lead-free glass frit with different softening points were synthesized by adjusting the matching of glass frit. Then,the lead-free silver paste was synthesized and its effect on the photoelectric properties of silicon solar cells was measured. The effect of particle size of silver powder and sintering temperature on the photoelectric properties of cells was studied. The results show that the conductive silver paste prepared by lead-free glass frit with lower softening point( 360 ℃) displays optimal photoelectric property. The micron/nano mixed silver powders have nice conductive property. By choicing the optimum particle size of silver powder and sintering temperature,the photovoltaic conversion efficiency and fill factor of silicon solar cell can increase to 18. 68% and 76. 9%,respectively.
引文
[1]刘世豪,王伟.海南热带环境下储热型太阳能利用系统[J].河南科技大学学报(自然科学版),2017,38(2):25-30.
[2]ZHANG N N,ZHANG Y,BAO J,et al.Luminescent solar concentrators with a bottom-mounted photovoltaic cell:performance optimization and power gain analysis[J].Chinese optics letters,2017,15(6):101-106.
[3]龙孟,甘卫平,周健,等.导电银浆低温固化薄膜的制备与导电性能[J].粉末冶金材料科学与工程,2017,22(4):481-486.
[4]ZHANG Y P,YANG Y X,ZHENG J H,et al.Thermal properties of glass frit and effects on Si solar cells[J].Materials chemistry and physics,2009,114(1):319-322.
[5]MA Q,MA S H,BAI J T,et al.Influence of lead-free glass frit in the front contact paste on the conversion efficiency of polycrystalline silicon solar cell[J].RSC advances,2017,7:47500-47506.
[6]XIANG F,LI B Y,LI Y F,et al.Preparation of silver-coated glass frit and its application in silicon solar cells[J].Chinese physics b,2016,25(7):524-528.
[7]KIM J H,KOO Y H,KO N Y,et al.Characteristics of Bi-based glass frit having similar mean size and morphology to those of silver powders at high firing temperatures[J].Journal of alloys and compounds,2010,497(1):259-266.
[8]JEON S J,KOO S M,HWANG S A.Optimization of lead-and cadmium-free front contact silver paste formulation to achieve high fill factors for industrial screen-printed Si solar cells[J].Solar energy materials and solar cells,2009,93(6/7):1103-1109.
[9]LóPEZ M A R,PEITEADO M,FERNáNDEZ J F,et al.Thick film Zn O based varistors prepared by screen printing[J].Journal of the European ceramic society,2006,26(14):2985-2989.
[10]甘卫平,甘梅,刘妍,等.低温烧结型银浆料在半导体芯片组装时的附着力[J].粉末冶金材料科学与工程,2007,12(4):211-215.
[11]甘卫平,张海旺,刘妍,等.低温烧结型银基浆料烧结膜孔洞率的研究[J].电子元件与材料,2008,27(6):18-21.
[12]TAI Y P,ZHENG G J,WANG H Y,et al.Effect of glass frit in Ag paste on the electrical properties of front-side Ag contacts for crystalline silicon solar cells[J].RSC advances,2015,5:92515-92521.
[13]孙宝全,宋涛.导电银浆:201710136305.9[P].2017-09-01.
[14]包娜,汪山,周欣山.光伏电极银浆:201710188080.1[P].2018-10-16.
[15]LAN F,BAI J T,WANG H.The preparation of oleylamine modified micro-size sphere silver particles and its application in crystalline silicon solar cells[J].RSC advances,2018,8:16866-16872.
[16]HONG K K,CHO S B,JAE S Y,et al.Mechanism for the formation of Ag crystallites in the Ag thick-film contacts[J].Solar energy materials and solar cells,2009,93(6/7):898-904.
[17]KONTERMANN S,KASEMANN M,GROHE A,et al.Physical understanding of the behavior of silver thick-film contacts on n-type silicon under annealing conditions[J].Solar energy materials and solar cells,2009,93(9):1630-1635.
[18]SCHUBERT G,HUSTER F,FATH P.Physical understanding of printed thick-film front contacts of crystalline Si solar cells-review of existing models and recent developments[J].Solar energy materials and solar cells,2006,90(18/19):3399-3406.