采用胶体 CdSe 量子点直接附着具有 ZnS 胶层和喷雾热解沉积相结合的工艺制备量子点敏化太阳能电池。

Quantum-dot-sensitized solar cells fabricated by the combined process of the direct attachment of colloidal CdSe quantum dots having a ZnS glue layer and spray pyrolysis deposition.

机构信息

KRICT-EPFL Global Research Laboratory, Advanced Materials Division, Korea Research Institute of Chemical Technology, 19 Sinseongno, Yuseong, Daejeon 305-600, Republic of Korea.

出版信息

Langmuir. 2010 Dec 7;26(23):18576-80. doi: 10.1021/la1034382. Epub 2010 Nov 11.

DOI:10.1021/la1034382

PMID:21069989

Abstract

We were able to attach CdSe quantum dots (QDs) having a ZnS inorganic glue layer directly to a mesoporous TiO(2) (mp-TiO(2)) surface by spray coating and thermal annealing. Quantum-dot-sensitized solar cells based on CdSe QDs having ZnS as the inorganic glue layer could easily transport generated charge carriers because of the intimate bonding between CdSe and mp-TiO(2). The application of spray pyrolysis deposition (SPD) to obtain additional CdSe layers improved the performance characteristics to V(oc) = 0.45 V, J(sc) = 10.7 mA/cm(2), fill factor = 35.8%, and power conversion efficiency = 1.7%. Furthermore, ZnS post-treatment improved the device performance to V(oc) = 0.57 V, J(sc) = 11.2 mA/cm(2), fill factor = 35.4%, and power conversion efficiency = 2.2%.

摘要

我们能够通过喷雾涂覆和热退火将具有 ZnS 无机胶层的 CdSe 量子点（QDs）直接附着到介孔 TiO(2)（mp-TiO(2)）表面。由于 CdSe 和 mp-TiO(2)之间的紧密结合，具有 ZnS 作为无机胶层的 CdSe QD 的量子点敏化太阳能电池可以轻松地传输产生的电荷载流子。通过喷雾热解沉积（SPD）应用获得额外的 CdSe 层可以提高性能特性，达到 V(oc) = 0.45 V、J(sc) = 10.7 mA/cm(2)、填充因子 = 35.8%和功率转换效率 = 1.7%。此外，ZnS 后处理将器件性能提高到 V(oc) = 0.57 V、J(sc) = 11.2 mA/cm(2)、填充因子 = 35.4%和功率转换效率 = 2.2%。