衍生自4,4’-二酸-2,2’-雙吡啶之三牙配位子、金屬錯合物及其應用4,4'-dicarboxy-2,2'-bipyridine derived tridentate ligand, metal complex containing the same, and application thereof

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/306,609

專利證號

US 8,822,818 B2

專利獲證名稱

衍生自4,4’-二酸-2,2’-雙吡啶之三牙配位子、金屬錯合物及其應用4,4'-dicarboxy-2,2'-bipyridine derived tridentate ligand, metal complex containing the same, and application thereof

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2014/09/02

技術說明

隨著人類對能源的需求越來越多，加上太陽能因具有取之不盡、用之不竭的優勢而逐漸被重視，進而推動太陽能電池的應用發展。其中又以染料敏化太陽能電池(dye-sensitized solar cell，簡稱DSSC)為最具有潛力的太陽能電池技術。DSSC是利用染料吸收太陽能中的可見光及近紅外光並用以激發電子，同時使該激發電子有效地注入半導體電極的傳導帶上，進而產生光電流，故染料性質的優劣會直接影響DSSC的光電轉換效率。目前廣泛應用在太陽能電池之染料是以釕錯合物為主要的研究對象。現有釕錯合物所含之配位子大致可分為二牙、三牙或四牙，其中含有三牙配位子的八面體釕錯合物由於分子結構具鏡面對稱，且不易形成異構物，反應後的分離工作得以簡化，且可有較高的合成產率。除此以外，三牙配位子可有較佳的分子軌域共軛，可讓吸收光譜延伸至長波可見光範圍，故使用其做為染料之太陽能電池可有較佳的光電轉換效率。 In recent years, there has been an increased research activity in Ru based coordination complexes as effective sensitizers in making cost effective, third-generation photovoltaics, namely: dye sensitized solar cells (DSSCs), which is largely due to their lower lying metal-to-ligand charge transfer (MLCT) transition that extended into the red and near infrared region of solar spectrum. Next to the famous N3 and N719 dyes, the second set of more effective system is the anionic complex, known as black dye or N749 dye. Herein We report the design and preparation of one type of Ru sensitizers coordinated by three thiocyanate ligands, together with a novel terpyridene chelate that possesses dual carboxy anchors and one electron donating and conjugating appendage, the latter serves as the effective light-harvesting auxochrome. This conceptual design presents a new generation of panchromatic Ru sensitizers that offers DSSC performance in solar conversion efficiency up to η = 10.2 % .

備註

本部(收文第1080013912號)108年03月04日清智財字第1089001408號所報專利終止維護案。

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