TCL Zhonghuan has completed its strategic acquisition of a controlling stake in Yidao New Energy in Quzhou, Zhejiang Province, and used the handover ceremony to unveil three high‑performance TBC and perovskite tandem module products aimed at next‑generation, vertically integrated PV manufacturing.
The acquisition positions TCL Zhonghuan to operate an integrated ecosystem covering silicon wafers, high‑efficiency cells and advanced modules within a single industrial chain. By consolidating wafer, cell and module capabilities, the company can align process standards, shorten R&D cycles and optimize cost and performance across products. The combined platform is expected to inject new momentum into high‑quality PV development by accelerating the commercialization of back‑contact and perovskite tandem technologies within a unified manufacturing and innovation framework.
At the ceremony, TCL Zhonghuan introduced a high‑efficiency TBC double‑glass module that integrates three core process and device‑level innovations. TCL Zhonghuan also presented a TBC single‑sided double‑glass module with a compact 1800 mm form factor designed for distributed, high‑end rooftop deployment.
Looking beyond current single‑junction architectures, TCL Zhonghuan launched a perovskite crystalline silicon four‑terminal tandem module targeting next‑generation PV technology routes. This four‑terminal configuration achieves a module power of 802.5 W with a conversion efficiency exceeding 28.5%, reflecting the efficiency potential of tandem architectures that more fully exploit the solar spectrum.
The module adopts a spectral hierarchical utilization design in which a large‑area perovskite top cell, engineered with bandgap control, preferentially absorbs higher‑energy photons while allowing near‑infrared light to transmit to the crystalline silicon bottom cell. Bandgap tuning in the perovskite layer optimizes the trade‑off between voltage and current, while bottom‑cell optical optimization ensures the transmitted spectrum is efficiently converted.
In the four‑terminal architecture, the perovskite and silicon sub‑cells are electrically independent but optically coupled, allowing each junction to operate at its own maximum power point without current‑matching constraints. This decoupling is a key mechanism behind the >28.5% module efficiency: each cell can be driven at its optimal operating point, and the total output is the sum of two individually optimized sub‑systems, enabling more complete utilization of the solar spectrum and translating directly into the reported 802.5 W output.
