JinkoSolar launched the 48-cell, all-black Tiger Neo 5.0 at its Global Tech Day in Shanghai, rated at up to 510 W and 25.52% efficiency
Its TAC cell combines TOPCon electron-selective contacts with amorphous-silicon heterojunction passivation on the rear and reaches up to 28% efficiency
The dual-glass module targets premium rooftops, with a power temperature coefficient of −0.24%/°C, product and performance warranties of up to 40 years, and limited initial supply
JinkoSolar has introduced a back-contact (BC) module based on its new TOPCon-based Amorphous-Si Passivating Cell (TAC) technology. CEO Charlie Cao launched the all-black Tiger Neo 5.0 on October 17, during the company’s two-day Global Tech Day in Shanghai. Aimed at premium residential rooftops, it offers up to 510 W output and 25.52% module efficiency. JinkoSolar says this is the highest mass-production module efficiency in the industry.
The 48-cell module measures 1,762 × 1,134 × 30 mm and weighs 22 kg, which works out to a power density of about 255 W/m². JinkoSolar is targeting homes with limited roof space, where owners also care about how the array looks. The company says the module delivers around 30 W more power and 0.8–1 percentage point higher efficiency than conventional BC modules of the same size. It did not name the products it compared against.
The module uses a hybrid passivated-contact cell. Instead of one contact technology for both polarities, TAC uses a heterojunction (HJT) contact for one and a TOPCon contact for the other, with both on the rear of the wafer.
In the p-type emitter regions, intrinsic and doped amorphous-silicon layers form a heterojunction contact. According to JinkoSolar, the amorphous-silicon/crystalline-silicon interface reduces surface recombination, which raises the open-circuit voltage. Low-temperature metallization also limits thermal stress and damage to the passivating layers.
The n-type regions use a TOPCon contact made of an ultrathin silicon oxide layer and heavily doped polysilicon. Electrons tunnel through the oxide while holes are blocked, which keeps the fill factor high and series resistance low.
Laser patterning and dielectric isolation integrate the two contact structures on the same rear surface. Moving both electrodes to the back leaves the front free of metal-grid shading. JinkoSolar reports a peak cell efficiency of 28% for TAC, close to the 28.7% theoretical limit it cites for TOPCon cells. The finished module reaches 25.52%. The company’s launch announcement sums it up as TOPCon’s carrier transport combined with HJT’s low-temperature processing and passivation.
At module level, JinkoSolar uses a gapless cell layout and hidden interconnection ribbons. Closing the gaps between cells adds about 2% of light-receiving area, worth roughly 10 W, according to the company. Hiding the ribbons also removes visible metal, giving the panel a uniform black look. The module is monofacial, with dual-glass construction and a black frame.
The power temperature coefficient is −0.24%/°C, compared with about −0.26%/°C for JinkoSolar’s earlier TOPCon modules. The company puts this down to a partly low-temperature process and high-coverage passivation. That matters on rooftops, where modules often run much hotter than the surrounding air. JinkoSolar also says low-light output in the morning, evening and overcast weather is similar to its Tiger Neo 3.0 modules.
“Our vision for Tiger Neo 5.0 was to develop a panel tailored to premium residential rooftops,”
CEO: Charlie Cao
He added that the team made changes across cell technology, passivation, structural design, module format and interconnection. JinkoSolar describes the launch as a shift from “one technology for all” to “one scenario, one technology.”
JinkoSolar offers product and performance warranties of up to 40 years. Initial production capacity is limited, and the company has not disclosed volumes, pricing or a delivery schedule. Target markets for the residential module include Australia and Europe.
For ground-mounted, commercial and industrial (C&I), data center, agrivoltaic, desert, offshore and other projects, JinkoSolar will keep relying on its bifacial TOPCon Tiger Neo 3.0 series. In these projects, total energy yield and yield per watt drive the levelized cost of electricity (LCOE). Tiger Neo 2.0 has shipped 220 GW since its launch in late 2023, and Tiger Neo 3.0 has secured more than 30 GW of orders since 2025. JinkoSolar says more than 700 GW of TOPCon-based modules have been installed worldwide.
The Tiger Neo 5.0 name also covers the large-format TOPCon modules of more than 700 W and up to 25.91% efficiency that JinkoSolar launched in June 2026, ahead of SNEC (see JinkoSolar Launches 700 W Tiger Neo 5.0 Module).
