Preparation of Ga doped ZnO transparent conductive film by RPD, with a crystal silicon heterojunction cell efficiency of 24.92%

Research Overview: A study published in Volume 310 of Solar Energy Materials and Solar Cells reported the preparation of Ga doped ZnO (GZO) transparent conductive oxide thin films using reactive plasma deposition (RPD) technology, which were applied to crystalline silicon heterojunction (HJT) solar cells with a conversion efficiency of 24.92%. The author of the paper is Wanying Zou、Jingxuan Zhou、Yuanbo Gong、Wanyu Liu、Lei Zhao、Libin Mo、Hongwei Diao、Xiaojie Jia、Wenjing Wang、Guanghong Wang， The source indicates a publication date of January 15, 2027. Transparent conductive oxide thin films are key functional layers for achieving lateral conductivity and light incidence in heterojunction cells. The study selected Ga doped ZnO system and used RPD as the film-forming method, demonstrating that this route has verifiable device results in the preparation of transparent conductive layers for crystalline silicon heterojunction cells.

Efficiency data and process route

The core data provided by the study is a battery conversion efficiency of 24.92%, corresponding to a GZO transparent conductive film prepared by combining crystalline silicon heterojunction cells with RPD.

. From the publicly available abstract information, this work directly relates the film formation process to device efficiency, providing a new experimental reference for the combination of transparent conductive layer materials and deposition methods. It should be noted that the source text only provides information such as title, journal issue, author, and publication date, and does not disclose the specific doping ratio, thickness, square resistance, transmittance, as well as the open circuit voltage, short-circuit current, filling factor and other sub parameters of the GZO film. It also does not provide comparative data with other transparent conductive film routes. Therefore, the process window and repeatability of the above efficiency values cannot be determined from existing sources.

The significance of photovoltaic packaging and backplate materials

Heterojunction cell routes are temperature sensitive, and their packaging materials and backplate systems usually need to be matched with lower processing temperatures and stricter weather stability requirements.

. The improvement of battery efficiency will directly increase the power generation revenue per unit area of components, and also increase the performance weight of packaging materials, backplates, and supporting antioxidant systems in long-term outdoor aging: once the packaging film turns yellow or the backplate aging fails, the efficiency advantage of the battery end will be difficult to realize within the 25 year life cycle. From the perspective of the polymer additive industry, the industrialization of such efficient battery technologies will continue to drive the demand for weather resistant and stable solutions for packaging materials, including the design of antioxidant and stabilizer combinations for UV, wet heat, and thermal oxidative aging. The adjustment of the transparent conductive film process may also affect the temperature budget of the battery end, thereby proposing new adaptation requirements for the cross-linking and laminating windows of the packaging material.

Energy storage and system level extension

Efficient crystalline silicon components also affect the system design on the energy storage side: an increase in power density per unit area helps to reduce supporting costs such as brackets, cables, and land, resulting in a change in the overall electricity cost structure of photovoltaic plus energy storage.

. For material suppliers, this means that the validation cycle of photovoltaic backplates, packaging materials, and energy storage related polymer materials will be more closely tied to the iterative pace of battery technology routes.

Observational matters

Currently, the publicly available information in this study focuses on efficiency results and process routes. The long-term reliability of GZO thin films, power attenuation performance after component level packaging, and the scalability cost and capacity adaptability of RPD processes have not been disclosed from any sources.

. The above steps will determine the actual path of this technology from battery efficiency record to mass production of components and energy storage system supporting materials.

Information source:24.92% efficient crystalline silicon heterojunction solar cells with Ga-doped ZnO transparent conductive oxide films by RPD， Organized by Herun Chemical.