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Xue Jingjing of Zhejiang University’s latest Nature Reviews Chemistry: A-Site Organic Cations in Metal Halide Perovskite Photovoltaic Devices
2025
12-01
Chen Shangshang of Nanjing University in Science Advances: 26.0%! Poly-SAMs Enable UV-Stable, High-Efficiency Perovskite Solar Modules!
05-30
Latest AM from Mei Anyi at Huazhong University of Science and Technology: Interface Field-Effect Passivation via Selective Cation Extrusion Enhances the Performance of Printable Mesoscopic Perovskite Solar Cells
05-27
Nankai University’s Chen Yongsheng: AM—20.3%! How should the 2D conjugated core unit of high-performance acceptors be designed?
Currently, nearly all high-performance acceptors are centered on electron-deficient diimide architectures, which severely constrains further innovation in acceptor molecular design.
05-13
Shanghai Jiao Tong University’s Liu Feng: AM = 17.6% at 18.4 cm²! Organic solar cells fabricated using low-toxicity solvents!
Organic photovoltaic devices (OPVs) aim to harness solar energy in an environmentally friendly, highly efficient, and low-cost manner, thereby offering a sustainable solution for both energy production and ecological conservation. In light of this, researchers led by Feng Liu at Shanghai Jiao Tong University have focused on optimizing the engineering fabrication techniques for organic photovoltaic devices and their mini-modules by developing solvent-processing methods with minimal ecological impact. A newly devised solvent-engineering strategy employs the environmentally benign o-xylene (OXY) together with a synergistic dual-additive system (DIM and DIB), achieving a record-breaking power conversion efficiency (PCE) of 20.0%—with a short-circuit current density (JSC) of 26.6 mA cm⁻², open-circuit voltage (VOC) of 0.935 V, and fill factor (FF) of 80.3%—while also demonstrating outstanding stability, retaining 82% of its initial performance after 1,500 hours. Mini-modules treated with the optimized TCE:OXY solvent blend (volume ratio 1:3) exhibit scalable performance, reaching an efficiency of 17.6% over an active area of 18.4 cm², which represents the highest efficiency achieved to date in the development of organic photovoltaic devices based on safe solvents. This work was recently published in the journal Advanced Materials under the title “Lowering toxicity of solvent in organic solar cells manufacturing for 20% efficiency.”
05-02
Nankai University’s Yongsheng Chen in EES: 17.33% at 13.5 cm²! A large conjugated rigid dimeric acceptor boosts power conversion efficiency beyond 20%!
Non-fullerene acceptors with large conjugated rigid backbones are conducive to reducing disorder and minimizing non-radiative recombination losses (ΔEnr), thereby enhancing the open-circuit voltage (VOC) of organic solar cells (OSCs). However, excessive aggregation of these acceptors often leads to unfavorable active-layer morphologies, resulting in lower short-circuit current density (JSC) and fill factor (FF), which in turn significantly reduces device efficiency.
04-27
Chem Review by Rui Wang of Westlake University and Jingjing Xue of Zhejiang University: Challenges and Opportunities Coexist—Where Will Perovskite Modules Go From Here?
Perovskite photovoltaic technology is rapidly advancing toward commercialization; however, numerous challenges remain in the manufacturing process of scaling up from small-scale perovskite solar cells (PSCs) to large-scale perovskite solar modules (PSMs).
04-18
In Less Than a Week, Nankai University’s Yongsheng Chen Publishes Another Paper in EES: 19.42% Efficiency for Binary Systems—Atomically Asymmetric Molecular Design Featuring a Y-Shaped Acceptor Central Unit!
04-09
Liang Chao from Xi’an Jiaotong University: AM: 26.34%! 21.94% at 69 cm²! Tunable charge polarization at the interface drives breakthroughs in efficiency and stability!
Nankai University’s Yongsheng Liu in Angewandte Chemie: 20.82%! A D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–......Nankai University’s Yongsheng Liu in Angewandte Chemie: 20.82%! A D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A–D–A......
Two-dimensional (2D) Ruddlesden–Popper (RP) perovskites have emerged as promising photovoltaic materials. However, the large dielectric mismatch and high exciton binding energy arising from insulating spacer layers have hindered further improvements in their power conversion efficiency. In light of this, Yongsheng Liu and colleagues at Nankai University have developed two semiconductor spacers—MeBThMA and CNBThMA—for 2D RP perovskite solar cells. Compared with MeBThMA, the CNBThMA spacer, which features a donor–acceptor (D–A) architecture, exhibits a larger dipole moment and adopts a face-to-face molecular stacking arrangement in single crystals. This unique D–A structure effectively mitigates the dielectric mismatch between the organic and inorganic layers, facilitates favorable band alignment, tunes anisotropic charge transport properties, and enhances the film quality of layered RP perovskites. As a result, devices based on CNBThMA (with a nominal n value of 5) achieve a record-breaking power conversion efficiency of 20.82%, to the best of our knowledge the highest reported for a 2D RP perovskite solar cell employing a semiconductor spacer. Our work pioneers a novel approach to designing organic semiconductor spacers with a D–A architecture for high-efficiency 2D perovskite solar cells. The paper was recently published in Angewandte Chemie International Edition under the title “Semiconductor Spacers with Donor-Acceptor Structure Drive 2D Ruddlesden-Popper Perovskite Solar Cells Beyond 20% Efficiency.”
03-26
