奈米結構型態有機無機混成太陽能電池

Abstract

由於能源耗損與環保議題的因素下，可再生的替代能源越顯重要。在眾多的再生能源當中，由於太陽能其來源最為豐沛且潔淨，而極具潛力。太陽能的研究發展在全球越來越扮演著極為重要的角色且持續不斷的增加。目前，薄膜型太陽能電池被視作為最具潛力可以改變太陽能發電成本架構的太陽能電池種類，而在眾多薄膜型太陽能電池的種類當中，有機無機混成太陽能電池由於同時具備了無機材料與有機材料的優點，而引發了研究熱潮。在本論文中，研究主題將涵蓋了以砷化鎵作為材料的混成太陽能電池、固態染料敏化太陽能電池、以及熱載子太陽能電池。在以砷化鎵作為材料的混成太陽能電池方面，我們完成了一種結合透明導電高分子PEDOT:PSS與垂直型態n型砷化鎵奈米線的一種新型混成太陽能電池。在製作以二氧化鈦奈米柱作為光電極的固態染料敏化太陽能電池方面，研究結果顯示，具有足夠密集的二氧化鈦奈米柱陣列可同時提供足夠的染料吸附以及有效的載子收集能力。在熱載子太陽能電池的研究方面，我們製作了一種可收集熱載子的光電轉化新型裝置，其結構包含了一有機電洞傳輸層、一有機電子傳輸層、以及一層以金屬做為材料的光吸收層，此元件所量測到的極大開路電壓，可證實的確收集到具高能量的電子與電洞。

For both energy consumption and environmental reasons, the importance of alternative renewable energy sources has increased in significance. Among various renewable energy, solar energy holds tremendous potential because it is the most abundant and cleanest energy. The research and development of solar cells are playing a significant role all over the world and have continuously increased. Nowadays, thin-film solar cells are considered to have the potential to revolutionize the cost structure of photovoltaic electricity generation. For several types of thin-film solar cells, the organic-inorganic hybrid solar cell has attracted a great deal of interest because it takes both advantages of organic and inorganic materials. In this thesis, the contents include the study of GaAs-based hybrid solar cells, solid-state dye-sensitized solar cells, and hot carrier solar cells. For GaAs-based hybrid solar cells, we demonstrate a new type of hybrid solar cell based on a heterojunction between PEDOT:PSS and vertically aligned n-type GaAs nanowire arrays. Form our TiO2 nanorod based solid-state dye-sensitized solar cell, the results show that solar cells with sufficiently dense arrays of long TiO2 nanorods can give good dye loading and the efficient carrier collection. For the hot carrier solars, we demonstrate a new type of hot-carrier photo-electric conversion apparatus, which comprises an organic hole transportation layer, an organic electron transportation layer, and a light-absorbing metal layer. This achieved high open-circuit voltage is the strong evidence that this device has collected the high-energy electrons and holes.