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標題: Pb-Sn-S固態半導體敏化太陽能電池
Pb-Sn-S solid-state semiconductor-sensitized solar cells
作者: 彭康政
Kang-Cheng Peng
關鍵字: 固態敏化太陽能電池
solid-state solar cell
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摘要: 本實驗主要為將三元化合物半導體量子點Pb-Sn-S運用至固態敏化太陽電池中之吸光材料。實驗採用兩階段的連續離子層吸附反應法(SILAR)並經過退火將三元化合物半導體量子點合成於多孔性TiO2薄膜內,最後在填充電洞傳輸層(Spiro-OMeTAD)。 在最佳樣品條件 : PbS(18)/SnS(9) cycles 浸泡時間分別為30 sec / 35 sec得到的最佳轉換效率為0.479 %,開路電壓為0.35 V,短路電流為2.58 mA/cm2,填充因子FF為53.03 %,利用X-ray粉末繞射儀分析所合成出材料的Pb-Sn-S半導體晶相,發現其中可能混雜者鉛及錫的氧化物和硫酸鉛的晶相,並經由UV-Vis Spectroscopy進行分析與計算能隙約為1.54 eV,藉由TEM得知Pb-Sn-S顆粒大小平均約為 10 nm,最後經由FESEM分析電池剖面結構得知吸收層TiO2 + Pb-Sn-S + Spiro - OMeTAD厚度約為1.1 μm,並進行EDS元素分析得到比例約為Pb0.59Sn0.41S。
In this experiment, we applied the Pb-Sn-S QDs as light absorption material for solid-state solar cells. Two-step SILAR (successive ionic layer adsorption and reaction) was used to synthesize the ternary compound QDs into the mesoporous TiO2 followed by filling the HTM (Spiro-OMeTAD). In the best condition : PbS(18)/SnS(9) SILAR cycles ; dipping time 30 sec / 35 sec. We got the best conversion efficiency: 0.479 %, Voc: 0.35 V, Jsc: 2.58 mA/cm2, FF (fill factor): 53.03%. We analyzed the ternary phase Pb-Sn-S by XRD and found that the Pb-Sn-S phase probably mixed with lead oxide, tin oxide, and lead sulfate. UV-vis Spectroscopy analysis the energy gap to be about 1.54 eV. TEM showed the average particle size of Pb-Sn-S to be about 10 nm. The absorption layer (TiO2 + Pb-Sn-S + Spiro – OMeTAD), estimated from FESEM cross-sectional images, is about 1.1 μm. Finally, the atomic ratios based on EDS elemental analysis are approxitae Pb0.59Sn0.41S.
文章公開時間: 2020-07-25
Appears in Collections:物理學系所



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