带有 (II/III) 基氧化还原电解质的氨酸敏感化太阳能电池的效率超过12%
Aswani Yella1, Hsuan-Wei Lee, Hoi Nok Tsao
1Laboratory for Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne-1015, Switzerland.
Science (New York, N.Y.)
|November 5, 2011
概括
研究人员使用氧化还原电解质和定制色素染料 (YD2-o-C8) 开发了新的染料敏感太阳能电池. 这一突破实现了高效率和光伏,克服了以前化物/三化物系统的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 电化学 电化学 电化学
- 太阳能光伏发电是如何实现的
背景情况:
- 染料敏感太阳能电池 (DSSC) 中的化/三化氧化还原穿器具有历史上有限的设备效率.
- 开发替代性氧化还原介质对于推进DSSC技术至关重要.
研究的目的:
- 为了研究使用三 (双) 氧化还原电解质的美索斯科普太阳能电池的性能.
- 为了评估定制合成的捐赠者-π-桥接收器色素染料 (YD2-o-C8) 与电解质一起作为敏感剂.
主要方法:
- 采用Co (II) /III (tris (bipyridyl) 氧化还原电解质的美索斯科普太阳能电池的制造.
- 一种新型色素染料 (YD2-o-C8) 的合成和特征设计,旨在最大限度地减少接口背向电子转移.
- 在模拟的AM1.5G阳光下测试太阳能电池的性能,包括共感应实验.
主要成果:
- YD2-o-C8染料与电解质配对,使高光伏电压超过1伏.
- YD2-o-C8的分子设计有效地抑制了回电子转移,提高了设备的性能.
- 与另一种有机染料共同敏感化导致功率转换效率为12.3%.
结论:
- 基于的氧化还原电解质为DSSC中的化/三化系统提供了可行的替代方案.
- 定制设计的氨酸染料,如YD2-o-C8,是实现太阳能电池高光伏和效率的关键.
- 开发的DSSC架构显示了高效太阳能转换的巨大潜力.
相关概念视频
01:27Photosystem I
Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
Both these photosystems work in concert. An excited electron from PSII is relayed to PSI via an electron transport chain in the thylakoid membrane of the chloroplast, which is comprised of the carrier molecule plastoquinone, the dual-protein cytochrome complex, and plastocyanin. As electrons move between PSII and PSI, they lose energy and must be re-energized...
01:26Oxygenic Photosynthesis
Oxygenic photosynthesis is a fundamental process in which light energy is harnessed to drive the oxidation of water, leading to the production of molecular oxygen (O₂), adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate (NADPH). This process is essential for sustaining aerobic life on Earth and is primarily carried out by cyanobacteria, algae, and plants. The core of oxygenic photosynthesis lies in the thylakoid membranes, where chlorophyll pigments facilitate light...
01:22Photosystem II
The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment molecules...
The pigment molecules are arranged across two photosystem domains — the antenna complex and the reaction center. The main aim of the pigment molecules...