金屬奈米粒子修飾氧化石墨烯於高分子光電元件之表面電漿效應

Abstract

｢金屬奈米粒子修飾氧化石墨烯於高分子光電元件之表面電漿效應｣計劃之主要目標在於 運用金屬奈米粒子修飾氧化石墨烯之奈米複合材料於改善高分子光電元件的特性。我們第一年 首先將合成高品質之金奈米粒子修飾氧化石墨烯衍生物，並以各種不同光譜技術進行材料與薄 膜特性之鑑定，之後以這些奈米材料作為高分子太陽能電池的陽極緩衝層，我們將以螢光光譜 等方式研究此新穎材料於元件之表面電漿效應，也將架設暫態光電壓量測技術研究表面電漿對 元件中電荷再結合率的影響。第二年則將使用低能間隙高分子製作元件，用以吸收長波長的太 陽能光子而進一步增加元件的效率，也將改變這些奈米材料的功函數用以製作反式結構，並研 究元件之穩定度與其毀損機制，目標為運用金屬奈米粒子修飾氧化石墨烯製成高效率且高穩定 性之高分子太陽能電池。第三年則將運用前二年的成果改善高分子光增益偵測器之特性，我們 預計本計劃結束前能研發出同時具有高效率及高穩定性之高分子偵測器。

In the project, “Surface plasmonic effects of metallic nanoparticle-decorated graphene oxides on the performance of polymer optoelectronic devices”, we plan to develop metallic nanoparticle-decorated graphene oxides (GOs) and use these novel nanomaterials for improving the performance of polymer solar cells and polymer photomultiple detectors. In the first year, we will synthesis high-quality nanocomposites and incorporate these materials into polymer solar cells as the buffer layer. We will investigate the surface plasmonic effecst on the devices through various approaches, such as steady-state and time-resolved photoluminescent spectroscopes. We will also setup transient photovoltage measurements to study the plasmoinc effect on the charge recombination. In the second year, several low-band-gap polymers will be used as the active layer of the devices to harvest long-wavelength photons of the solar irradiation. Higher power conversion efficiencies are expected. Moreover, the work functions of the metallic nanoparticle-decorated GOs will be modulated to fabricate inverted structures and the device stability will be investigated. The aim is to produce efficient and stable polymer solar cells. In the last year, we will apply the techniques developed in the last two years on polymer photomultiple detectors to improve the device efficiency. We expect that efficient and stable photodetectors can be also developed at the end of this project.