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Nanotechnology Now - Press Release: 2D materials for conducting hole currents from grain boundaries in perovskite solar cells

Nanotechnology Now
Home > Press > 2D materials for conducting hole currents from grain boundaries in perovskite solar cells
a,b The structural schematic diagram and energy-level band diagram of a BP-modified PSC with a normal structure. c,d Current density-voltage (J-V) curves (reverse scan) and external quantum efficiency (EQE) spectra of PSCs without (control) and with BP deposition (1~3 times) on perovskite film surface. e Histogram of power conversion efficiencies (PCEs) of PSCs without (control) and with BP modification (BP coating for 2 times). The PCEs are derived from the reverse scans of the J-V curves. f The average PCE enhancement after the modification of perovskite films with different 2-D materials. ....

Hung Hom , Hong Kong General , Hong Kong , Dong Shen , Feng Yan , Wei Lu , Zafer Hawash , Qidong Tai , Guanqi Tang , Naixiang Wang , Yabing Qi , Jiupeng Cao , Large Sample Atomic Force Microscope , Changchun Institute Of Optics , Hong Kong Polytechnic University , Wave Inc , Department Of Applied Physics , Chinese Academy Of Sciences , Peng You , Chun Ki Liu , Chun Sing Lee , Professor Feng Yan , Applied Physics , Changchun Institute , Fine Mechanics , Chinese Academy ,

2D materials for conducting hole currents from grain boundaries in perovskite solar cells

Grain boundaries (GBs) in perovskite solar cells (PSCs) have been found to be detrimental to the device performance. Scientists in Hong Kong developed a unique approach by modifying the perovskite GBs with flakes of high-mobility 2-D materials, which can conduct holes from the GBs to hole transport layers in the PSCs and make the GBs hole channels in the devices. This work presents a cost-effective strategy for improving the performance of PSCs by using high-mobility 2-D materials. ....

Hung Hom , Hong Kong General , Hong Kong , Feng Yan , Hong Kong Polytechnic University , Department Of Applied Physics , Professor Feng Yan , Applied Physics , Chemistry Physics Materials Sciences , தொங்கவிடப்பட்டது ஹோம் , ஹாங் காங் ஜநரல் , ஹாங் காங் , ஃபெங் யான் , ஹாங் காங் பாலிடெக்நிக் பல்கலைக்கழகம் , துறை ஆஃப் பயன்படுத்தப்பட்டது இயற்பியல் , ப்ரொஃபெஸர் ஃபெங் யான் , பயன்படுத்தப்பட்டது இயற்பியல் , வேதியியல் இயற்பியல் பொருட்கள் அறிவியல் ,