{
    "success": true,
    "data": {
        "id": 1866117,
        "msgid": "chinese-researchers-develop-perovskite-organic-solar-cell-with-record-efficiency-1784300083",
        "date": "2026-07-17 21:05:16",
        "title": "Chinese researchers develop perovskite-organic solar cell with record efficiency",
        "author": "",
        "source": "ANTARA_ID",
        "tags": "",
        "topic": "Technology",
        "summary": "Chinese researchers have developed a new perovskite-organic tandem solar cell achieving a certified steady-state photoelectric conversion efficiency of 28.04 percent, a new world record. The cell, created by the Institute of Chemistry, Chinese Academy of Sciences, also demonstrated exceptional operational stability by retaining 90 percent of its initial efficiency after 625 hours of continuous illumination. The team overcame a major phase-separation challenge by using an additive that transforms under light to suppress ion migration, potentially paving the way for commercial viability and applications in space missions.",
        "content": "<p>Researchers from the Institute of Chemistry, Chinese Academy of\nSciences (ICCAS) have developed a new perovskite-organic tandem solar\ncell that has achieved a certified steady-state photoelectric conversion\nefficiency of 28.04 percent, setting a new world record. The cell\nfeatures a wide-bandgap perovskite upper subcell that achieves the\nhighest open-circuit voltage ever recorded for its type. When precisely\nintegrated with an organic lower subcell, the tandem device reached a\npeak laboratory power conversion efficiency of 28.80 percent. It also\ndemonstrated exceptional operational stability, maintaining 90 percent\nof its initial efficiency after 625 hours of continuous illumination. Li\nYongfang, an academician at the Chinese Academy of Sciences who led the\nresearch team, stated that the perovskite-organic tandem solar cell\ncombines lightweight design, mechanical flexibility, and high\nefficiency. He noted that beyond applications in buildings,\ntransportation, and wearable electronics, its outstanding\npower-to-weight ratio makes it a promising candidate for future space\nmissions, including satellites and space stations, where lighter and\nmore efficient energy sources are critical. Emerging photovoltaic\ntechnologies, particularly perovskite and organic solar cells, have\nadvanced rapidly in recent years. Perovskite-organic tandem cells\nmaximise solar spectrum utilisation, with the upper perovskite layer\ncapturing visible light and the lower organic layer absorbing\nnear-infrared light, yielding theoretical efficiencies far exceeding\nsingle-junction devices. However, the perovskite top layer has faced\npersistent challenges. To absorb sufficient sunlight, the thin film must\nincorporate both iodine and bromine. During fabrication or prolonged\nlight exposure, iodide and bromide ions tend to separate, a phenomenon\nknown as phase segregation, leading to continuous voltage loss and\nperformance degradation. Meng Lei, a researcher at the institute and a\nkey team member, explained that phase segregation has been a major\nbottleneck, severely disrupting device operational stability and\nhindering commercial feasibility. To address this, the team introduced\nan additive molecule called TDB into the perovskite layer. During the\ninitial film formation stage, TDB acts as a mediator, slowing the rapid\naggregation of bromide ions and ensuring a homogeneous distribution of\niodine and bromine from the outset. Upon light exposure, TDB transforms\ninto a new molecular structure, TAB, which then anchors to the grain\nboundaries of the perovskite material. Meng noted that this newly formed\nmolecule effectively suppresses halide ion migration and phase\nsegregation, representing a transformation from being light-intolerant\nto light-adaptive.<\/p>",
        "url": "https:\/\/jawawa.id\/newsitem\/chinese-researchers-develop-perovskite-organic-solar-cell-with-record-efficiency-1784300083",
        "image": ""
    },
    "sponsor": "Okusi Associates",
    "sponsor_url": "https:\/\/okusiassociates.com"
}