Author: |
謝幸樺 Hsin-Hwa Hsieh |
---|---|
Thesis Title: |
雙介面修飾之組合應用於反式聚合物太陽能電池之研究 Giant Enhancement of Inverted Polymer Solar Cells Efficiency by Manipulating Dual Interlayers with Integrated Approaches |
Advisor: |
李亞儒
Lee, Ya-Ju 陳永芳 Chen, Yang-Fang |
Degree: |
碩士 Master |
Department: |
光電工程研究所 Graduate Institute of Electro-Optical Engineering |
Thesis Publication Year: | 2014 |
Academic Year: | 102 |
Language: | 英文 |
Number of pages: | 46 |
Keywords (in Chinese): | 介面修飾 、表面電漿效應 、導電小分子 |
Keywords (in English): | interface modified, surface plasmon, conductive small molecules |
Thesis Type: | Academic thesis/ dissertation |
Reference times: | Clicks: 158 Downloads: 0 |
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本研究提出使用2-萘硫醇(2-Naphthalenethiol,2-NT)與金奈米粒子對主動層兩側之緩衝層做介面修飾,可提升含氧化鋅奈米柱(ZnO nanorod)之反式聚合物太陽能電池效率。2-NT用於對ZnO奈米柱進行表面鈍化處理以減少氧缺陷,這個結果使太陽能電池之開路電壓提高,2-NT亦給予電子一個明確的方向,使電子傳導至陰極的過程中復合的機率變小;而金奈米粒子,利用散射效果及區域性表面電漿共振效應(Localized Surface Plasmon Resonance, LSPR)提高整體元件的光子捕獲量及激子解離率,藉此提升光電流與填充因子。同時藉由兩種介面修飾可以進一步提升上述之效果,使整體元件達到更高的效率。
本研究成功的整合製程與雙介面修飾法,元件經兩種方法修飾後之光轉換效率由2.02%提升至4.20%,其提升幅度將近200%,這是在ZnO結構之有機聚合物太陽能電池上之最高紀錄,也代表著對於高效率聚合物共混結構電池上開創了一種新的修飾方法。
To modify the interface on buffer layer with 2-Naphthalenethiol(2-NT) and gold nanoparticles to improve efficiency of the inverted polymer solar cell containing Znic oxide (ZnO) nanorods structure is demonstrated. Here we use the 2-Naphthalenethiol(2-NT) and gold nanoparticles to modify the interlayer between active layer and electrode on both sides. 2-NT is used for passivation treatment on the surface of ZnO nanorods, to reduce the oxygen defects in ZnO nanorods and improve the open circuit voltage of the solar cell. 2-NT also provides a clear direction for electron to transport to cathode that reduce the probability of electron recombination. Introducing gold nanoparticles improved scattering effects and surface plasmon resonance (SPR). These two phenomenon increase the amount of captured photons and the probability of exciton dissociation lead to the enhancement of photocurrent and fill factor. Modifying both two buffer layers in two ways simultaneously can further improve the overall efficiency.
The results of this study also shows that the dual interface modification in the manufacturing process is indeed feasible. In addition, the enhancement of photon conversion efficiency achieved nearly 200% after dual interface modification. This is the highest record for organic polymer solar cell with ZnO nanorod structure. It also represents that we demonstrate a novel method to modifying the polymer blend structure organic solar cell.
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