Nb, F-Didoped Titanium Micro-Beads Used in Dye Sensitized Solar Cells

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Nb, F-Didoped Titanium Micro-Beads Used in Dye Sensitized Solar Cells

更新时间：2025-07-09

- Nb, F-Didoped Titanium Micro-Beads Used in Dye Sensitized Solar Cells
- Vol. 45, Issue 12, Pages: 87-91(2011)
- 作者机构：
  
  1. 西安交通大学电子陶瓷与器件教育部重点实验室,西安,710049
  2. 西安交通大学国际电介质研究中心,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： O649.1;TQ134.1
- Online First：10 December 2011，
  
  Published：2011
- 稿件说明：
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Nb, F-Didoped Titanium Micro-Beads Used in Dye Sensitized Solar Cells[J]. 2011, 45(12): 87-91.
DOI：

Nb, F-Didoped Titanium Micro-Beads Used in Dye Sensitized Solar Cells[J]. 2011, 45(12): 87-91. DOI：

摘要

为了提高染料敏化太阳能电池的性能

对其光阳极半导体材料进行了改性.用一步水热法制备了铌、氟双掺杂二氧化钛(NFT)微球

它是由多层纳米管和纳米颗粒组合在一起形成的微米级球状颗粒.这种特殊的结构使得用NFT材料制作的光阳极具有较大的表面积

有利于染料吸附.NFT的结晶性比未掺杂的二氧化钛显著增强

且结晶度随掺杂量的增加而增强

有利于提高其中的电子迁移速率并降低表面极化

因此有助于提高染料敏化电池的短路电流密度和开路电压.入射单色光子-电子转换效率(IPCE)的测试结果表明

NFT制备的电池在可见光范围内的转换效率有显著提高

在紫外波段的本征转化效率也有一定提高

电池的整体转换效率比未掺杂时提高了38%.

Abstract

Photoanode semiconductor materials are modified to improve the performance of dye-sensitized solar cells(DSSCs). Niobium and fluorin didoped titanium dioxide(NFT)micro-beads that contain multilayer nanotubes and nanoparticles are synthesized via a one-step sol-gel hydrothermal method. The surface area of these beads is increased by the special nano-structure

so as the adsorption of dye is promoted. In addition

the crystallinity of NFT is increased with the increase of doping content compared to undoped titanium dioxide

which improves the electronic diffusion and reduces the surface polarization. As a result

the open circuit voltage and short circuit photocurrent density of DSSCs are increased. Tests on monochromatic incident photon-to-electron conversion efficiency(IPCE)show that the optical quantum efficiency of NFT fabricated DSSCs is improved significantly at visible ligh

t region and is also enhanced at ultraviolet range. Consequently

the overall conversion efficiency of the DSSCs with NFT has a 38% increase over that of DSSCs with undoped TiO

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references

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