The use of PHPS in solar cell coatings has increased significantly in recent years, and it plays a variety of key roles in solar cell devices. For example, PHPS is used to make the dielectric barrier layer of solar cells, which is placed between the metal or glass substrate and the CIS (copper indium sulfide) or CIGSe (copper indium gallium selenide) photovoltaic structure. Thin-film solar cell encapsulation layers made with PHPS, which allow chalcopyrite-based solar cells to have an average reflectance of less than 95% in the 300 to 900 nm light band and more than 200% in the 1100 to 1500 nm band, showing excellent resistance to aging.PHPS is used to prepare anti-glare films for solar cells, which are equipped with an appropriate anti-glare surface texture and can effectively remove surface contamination. Vacuum UV light was used to convert PHPS into silica to encapsulate flexible chalcogenide solar cells (PSCs), and in order to prevent the degradation of PSCs caused by the PHPS solution and VUV (λ = 172 nm) light, CdSe/ZnS quantum dots were used as a barrier layer distributed on a polydimethylsiloxane substrate, and the realized encapsulation layer had a very low water vapor permeability, which made the flexible solar cell's The room temperature service life of the flexible solar cell was increased by more than 400 hours.
In addition, by dissolving PHPS in xylene and hydrolyzing it with ammonia, the chalcogenide film was further adhered to a dense layer of titanium oxide, which provides a new idea for the mass production of chalcogenide photovoltaics.
In addition to conventional dielectric, barrier, and optical layers, PHPS has also been used to prepare other functional layers.PHPS was used to form a compound layer on a substrate, in which a portion of the silazane compound was converted into a compound containing siloxane bonds, and on which a metallic layer with silver as the main component was formed to make a transparent conductive film. The study demonstrated wavelength-converting films prepared using a solution containing PHPS and a wavelength-converting agent, which increased visible light transmittance to 50% or more compared to an aqueous solution. Sequentially stacked oxide layers on a metal substrate and silica coatings formed by curing PHPS were used for thermally conductive insulating panels for electronic components, which demonstrated good thermal conductivity and insulation properties. PHPs block copolymers containing straight-chain or cyclic block A and silica-rich polysilazane backbone block B were prepared by light cross-linking reaction with the help of cross-linking agents. These block copolymers have a unique structure that enables the preparation of thick, high-density sacrificial films with good adhesion to the substrate, providing an additional functional layer for solar cells. These studies show that PHPS, as a multifunctional material, has a wide range of applications in the field of solar cells, which are not only limited to the improvement of cell efficiency and lifetime, but also include the enhancement of the environmental stability and reliability of the cells. Different treatments and applications of PHPSs enable the preparation of high-performance solar cell modules to meet specific needs, which further promotes the development of solar technology and the advancement of the photovoltaic industry.

Room termperature curing polysilazane, pls check IOTA 9150, IOTA 9150A. 
High termperature curing polysilazane, pls check IOTA 9108, IOTA 9118.