TiO2/Cu2O all-oxide heterojunction solar cells produced by spray pyrolysis
TiO2/Cu2O all-oxide heterojunction solar cells produced by spray pyrolysis
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DOI：
10.1016/j.solmat.2014.10.005
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发表时间：
2015-01-01
影响因子：
6.9
通讯作者：
Fortunato, Elvira
中科院分区：
文献类型：
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作者：
Pavan, Michele;Ruehle, Sven;Fortunato, Elvira
在这里，我们提出了第一次完全通过喷雾热解到氟掺杂的氧化锡（PTO）覆盖的玻璃基板上，使用银作为背接触的TiO 2/Cu 2 O全氧化物异质结太阳能电池。选择组合方法来研究TiO 2窗口层和Cu 2 O光吸收体厚度的影响。我们观察到的开路电压高达350 mV和短路电流密度，这是强烈依赖于CuO的厚度，达到最大值类似于0.4 mA/cm（2）。光学研究表明，厚度为300 nm的喷雾热解沉积的Cu 2 O是足以吸收大多数光子的能量以上的对称性允许的光学跃迁为2.5 eV，这表明低电流密度是由强复合在吸收剂，由小的Cu 2 O晶粒。(C)2014作者由爱思唯尔公司出版
Here we present for the first time a TiO2/Cu2O all-oxide heterojunction solar cell entirely produced by spray pyrolysis onto fluorine doped tin oxide (PTO) covered glass substrates, using silver as a back contact. A combinatorial approach was chosen to investigate the impact of the TiO2 window layer and the Cu2O light absorber thicknesses. We observe an open circuit voltage up to 350 mV and a short circuit current density which is strongly dependent of the Cu2O thickness, reaching a maximum of similar to 0.4 mA/cm(2). Optical investigation reveals that a thickness of 300 nm spray pyrolysis deposited Cu2O is sufficient to absorb most photons with an energy above the symmetry allowed optical transition of 2.5 eV, indicating that the low current densities are caused by strong recombination in the absorber that consists of small Cu2O grains. (C) 2014 The Authors. Published by Elsevier B.V.