Solar cell manufacturer Yingfa Ruineng has produced a perovskite/back-contact (BC) tandem module using BC cells from its subsidiary as the bottom cell.
Classified as large-format with dimensions of 2.384 m × 1.134 m, the module achieved a power output of 724 W and a conversion efficiency of 26.78%. According to the company, the perovskite top cell contributes more than half of the module’s power generation, while the BC bottom cell provides the remainder.
The module adopts a 4-terminal (4T) tandem architecture, with the perovskite top cell absorbing short-wave light in the 300-800 nm range and the BC bottom cell capturing long-wave red and near-infrared light in the 600-1,200 nm range.
On the corporate side, Yingfa Ruineng resubmitted its listing application to the Hong Kong Stock Exchange in March after its initial filing lapsed (see China Solar PV News Snippets).
Concentrated solar power (CSP) solution provider Cosin Solar has started large-scale heliostat production and installation for its 350 MW tower CSP project in Golmud, Qinghai Province.
The company said this is currently the ‘world's largest’ single-unit tower CSP project. With a total investment of RMB 5.4 billion, the facility adopts a ‘3-tower, 1-turbine’ configuration and includes a 14-hour molten salt thermal storage system. The project will deploy 89,000 heliostats across a mirror field area of 3.3 million m².
Once operational, it is expected to generate around 960 million kWh annually, reducing standard coal consumption by 263,400 tons and CO₂ emissions by approximately 720,000 tons.
Cosin joins a list of companies announcing CSP projects, the latest of which came from CEEC earlier this month (see China Solar PV News Snippets).
JA Solar and the Ningbo Institute of Materials Technology and Engineering (NIMTE) under the Chinese Academy of Sciences have published research in Advanced Functional Materials detailing a TOPCon solar cell with an open-circuit voltage (Voc) of 748.6 mV.
According to the paper, the research addresses key TOPCon challenges related to passivation quality, parasitic absorption, and metallization damage through a 3-layer ultra-thin polysilicon composite structure combined with optimized LFRP silver paste.
The record Voc was achieved on industrial-size silicon wafers. This Voc achievement follows the company's announcement earlier this week of a new efficiency record of 28.2% for its HyperGen BC solar cell (see China Solar PV News Snippets).
Major Chinese energy developer CGN has fully grid-connected its 800 MW ‘PV + desert control’ project in Cele County, Hotan Prefecture, Xinjiang.
Located on the southern edge of the Taklamakan Desert, the project spans around 20,600 mu (1,373 hectares), with an equivalent area designated for desert rehabilitation.
The facility includes a 120 MW/480 MWh electrochemical energy storage system and integrates PV generation with ecological restoration measures.
CGN said the PV panels help reduce near-surface wind speed and sand movement, reduce water evaporation, and support vegetation growth beneath the modules.