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Project overview
  • Lead Organisation

    The University of New South Wales


    Kensington, New South Wales

    ARENA Program

    Ultra Low Cost Solar PV Research and Development Round

  • Start date

    5 December 2022

    End date

    31 December 2027

  • Project Partners
    Tindo Operations, Canadian Solar, DAS Solar, Risen Energy, Trina Solar, Toyo Aluminium


The project aims to improve the individual efficiencies of current Passivated Emitter and Rear Cell (PERC) and Tunnel Oxide Passivated Contact (TOPCon) cells by combining them into a novel technology called Rear-Junction p-type PERC/TOPCon Hybrid Solar Cells (RJ-PERP).


This project is funded under the ULCS PV Research and Development Round and will build on ARENA’s previous investment into solar PV that support projects aligning with ARENA’s ‘Solar 30 30 30’ target to improve module efficiency to 30 per cent and reduce total construction costs of utility scale solar farms to 30 cents per watt by 2030. Funding is being made available to focus on commercialisation prospects, which will take place after an initial R&D phase, to assist getting the new technologies into the market.


The project will be delivered in two stages, a 3-year R&D Stage, followed by a 2-year Commercialisation Stage. During the R&D Stage, the project will develop processing sequences suitable for pilot-line implementation, including top aluminium metallisation line width reduction, optimising polysilicon layer to avoid rear-junction shunting utilising silver or aluminium rear contacts, exploiting RJ-PERP’s “wrap around” tolerance, accelerated testing of pilot-line product, and evaluation of further efficiency improvements will be conducted. The Commercialisation Stage will involve pilot-line evaluation of the new technology.


The hybrid RJ-PERP cell configuration aims to capture the best features of both the PERC and TOPCon cells to produce a cell with overall higher performance without the cost premium of TOPCon cells. RJ-PERP technology would provide a higher efficiency, lower cost medium-term PV solution up until perovskite/silicon or other novel tandems become mainstream.

Last updated
05 January 2023
Last updated 05 January 2023


Solar research funding to drive costs lower

Australian solar energy research is already world-leading, but our ambition is to create Ultra Low Cost Solar to accelerate the transition to renewables.

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