臺灣博碩士論文加值系統

本論文研究二維材料量子點提升高分子太陽能電池轉換效率（Power Conversion Efficiency）之應用。本論文以P3HT和PC61BM作為有機太陽能電池主動層的二元共混物，以此為基礎添加了p型二維MoS2量子點。我們發現摻入p型MoS2 QDs的三元混合太陽能電池相對於二元混合物P3HT：PC61BM的元件效率有所提升。轉換效率由3.72 %提升至4.04 %，相較於二元結構成長了8.60 %。p型MoS2 QDs作為添加物進一步改善了高分子太陽能電池之短路電流，短路電流由9.74 mA/cm2提升至10.5 mA/cm2。整體的效能提升是由於P3HT的結晶性提升，排列更加有序，進而提高對於太陽光的吸收能力和電洞的遷移率。

We study the use of quantum dots (QDs) based on two-dimensional materials to enhance the power conversion efficiency (PCE) of polymer solar cells. In this work, P3HT and PC61BM were used as the active layer of the polymer solar cells. Based on this structure, the p-type two-dimensional MoS2 QDs were added to the active layer precursor solution to form the ternary mixture for the active layer. We found that the ternary hybrid solar cell with p-type MoS2 QDs exhibited superior performance than that of the solar cells without MoS2 QDs. The best PCE was found to be 4.04 % for the solar cells with 4 vol% MoS2 QDs which was an increase of 8.60 % compared to that for the solar cells without MoS2 QDs (3.72%). The p-type MoS2 QDs as an additive were found to improve the short-circuit current of the polymer solar cell, and the short-circuit current was increased from 9.74 mA/cm2 to 10.49 mA/cm2. The overall improvement in performance was due to the increased crystallinity of P3HT, which is more orderly and thus improved the absorption of sunlight and the mobility of hole carriers.

中文摘要.................................................I
ABSTRACT.............................................. II
致謝................................................. III
目錄...................................................IV
圖目錄.................................................VI
表目錄...............................................VIII
第一章 緒論 ........................................... 1
1.1前言.................................................1
1.2太陽能電池發展........................................1
1.3有機高分子太陽能電池簡介...............................1
1.4研究動機..............................................2
第二章 太陽能電池理論背景.................................3
2.1 太陽能電池工作原理...................................3
2.1.1太陽光譜............................................3
2.1.2光伏效應............................................4
2.2太陽能電池參數計算....................................5
2.2.1短路電流............................................5
2.2.2開路電壓............................................6
2.2.3能量轉換效率與填充因子...............................6
2.2.4外部量子效率........................................8
2.2.5電子電洞遷移率......................................9
2.3主動層添加物改善效能太陽能電池效能之文獻回顧............10
2.3.1氧化銅奈米顆粒作為添加物............................10
2.3.2 CdSe QDs作為添加物................................11
2.3.3 MoS2 nanosheets作為添加物.........................12
第三章 實驗原理及儀器介紹................................13
3.1 實驗儀器............................................13
3.1.1太陽光模擬系統.....................................13
3.1.2光電轉換效率系統...................................14
3.1.3紫外/可見分光光譜儀................................15
3.1.4蒸鍍機............................................15
3.1.5原子力顯微鏡.......................................16
3.1.6 X-射線繞射儀（X-Ray Diffraction，XRD）............17
3.2 實驗材料............................................18
3.2.1氧化銦錫玻璃.......................................18
3.2.2氧化鋅............................................18
3.2.3 P3HT.............................................19
3.2.4 PC61BM...........................................19
3.2.5二硫化鉬量子點合成.................................20
3-3 元件製程............................................20
第四章 結果與討論.......................................22
4.1 P3HT:PC61BM適合的混摻比例...........................23
4.2 P型MOS2 QDS適合的添加量.............................24
4.2.1開路電壓隨時間衰減圖................................26
4.2.2外部量子效率.......................................27
4.2.3紫外/可見分光光譜儀................................28
4.2.4單載子電洞元件.....................................29
4.2.5原子力顯微鏡分析...................................29
4.2.6 X-ray 繞射光譜....................................32
第五章 結論.............................................33
參考文獻................................................34

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