Fabrication of Perovskite-Type Photovoltaic Devices with Polysilane Hole Transport Layers

Abstract

Perovskite-type photovoltaic devices with polysilane hole transport layers were fabricated by a spin-coating method. In the present work, poly(methyl phenylsilane) (PMPS) and decaphenylcyclopentasilane (DPPS) were used as the hole transport layers. First, structural and optical properties of the PMPS and DPPS films were investigated, and the as-prepared PMPS and DPPS films were amorphous. Optical absorption spectra of the amorphous PMPS and DPPS showed some marked features due to the nature of polysilanes. Then, microstructures, optical and photovoltaic properties of the perovskite-type photovoltaic devices with polysilane hole transport layers were investigated. Current density-voltage characteristics and incident photon to current conversion efficiency of the photovoltaic devices with the polysilane layers showed different photovoltaic performance each other, attributed to molecular structures of the polysilanes and Si content in the present hole transport layers.

Patterning of functional materials in line with photosensitive template geometry

“…Because polysilanes have unique electrical and optical properties, they are of scientific interest. [21][22][23] Various applications have been investigated, such as photovoltaic cells, [24][25][26][27][28][29][30][31][32] electroluminescence 33) or an LSI fabrication process. 34,35) We believe our invention can contribute largely to these activities.…”

Effects of Polysilane Addition to Chlorobenzene and High Temperature Annealing on CH3NH3PbI3 Perovskite Photovoltaic Devices

“…Polysilanes may function as a protective layer when deposited on perovskite compounds. Hence, polysilanes, such as decaphenylcyclopentasilane (DPPS), have been applied as HTLs [43,44] and as additives in the photoactive layer [45] of MAPbI 3 perovskite devices. DPPS has been found to promote a uniform perovskite morphology, which increases device power conversion efficiencies.…”

Effects of Decaphenylcyclopentasilane Addition on Photovoltaic Properties of Perovskite Solar Cells

“…Other polymer materials, including polysilane derivatives, have been applied to organic solar cells [29][30][31]. The polysilanes were also applied as a hole transport layer for perovskite solar cells [32,33], and the photovoltaic performance was improved for a device using decaphenylcyclopentasilane (DPPS). However, there are few reports on the application of the polysilane derivatives to the perovskite photoactive layers [34], except for the hole transport layers [32].…”