Showing papers by "Jianming Lin published in 2022"
TL;DR: In this article , a three-terminal photocapacitor integrated with perovskite solar cell and symmetrical supercapacitor units is designed, and a function portfolio management concept is proposed to harmonize the energy matching between conversion and storage units and seek the maximum power points coincide and the maximum efficiency points synchronize.
8 citations
TL;DR: In this paper , a cucurbit[8]uril-derived hierarchical porous carbon (CB8C-Y) with primary pore size of 0.88 nm and secondary pore sizes of 1.5 nm as electrode, and four ionic liquids with different cation sizes are compared and utilized as electrolytes.
7 citations
TL;DR: In this paper , a photocapacitor integrating both energy harvesting and storage functions into a single device is proposed to facilitate the efficient and sustainable utilization of green energy, which is a frontier research orientation.
Abstract: Photocapacitor integrating both energy harvest and storage functions into a single device is a frontier research orientation, which facilitates the efficient and sustainable utilization of green energy.
5 citations
TL;DR: In this article , the surface reconstruction of perovskite caused by IPA makes it easier for [BMIM]+ to passivate uncoordinated Pb2+ defects, [PF]6− to more easily replace and compensate unstable I−/Br− ions and I− /Br− vacancies.
3 citations
TL;DR: In this article , a multi-functional potassium oleate (KOA) modified perovskite solar cells (PSCs) were proposed to solve the defects and its induced non-radiation loss.
Abstract: As a typical of the next generation photovoltaic technology, perovskite solar cells (PSCs) have attracted extensive attention in industry and academia because of their outstanding excellent performance and unprecedented growing efficiency. However, commercial applications of PSCs require further improvements in efficiency and stability, and the defects and its induced non-radiation loss become the research hotspots. Herein, potassium oleate (KOA) as an effective modifier is introduced at the interface of perovskite/spiro. The K[Formula: see text] ions of KOA can penetrate into the perovskite bulk to fill the positive charge vacancy; the-COO[Formula: see text] group of KOA can coordinate with Pb[Formula: see text] and passivate defects; the hydrophobic long chain olefins of KOA can cover on perovskite, and thus, ameliorate the environmental stability of the devices. As a result, the multi-functional KOA-modified PSC achieves an impressive efficiency of 23.22%, along with high open circuit voltage ([Formula: see text] of 1.16 V.
1 citations
TL;DR: In this paper , the carboxyl group on lauric acid can coordinate with the Pb2+ on the perovskite and passivate interface defects, which reduces carrier nonradiative combinations and enhances the photovoltaic performance of PSCs.
Abstract: Interfacial defect passivation of perovskite active layer has become an advantageous design that can alleviate interfacial nonradiative recombination, increase the stability and improve the performance of the device. Here, lauric acid as surface passivation agent is introduced on the top of a perovskite active layer. The carboxyl group (-COOH) on lauric acid can coordinate with the Pb2+ on the perovskite and passivate interface defects, which reduces carrier nonradiative combinations and enhances the photovoltaic performance of PSCs. The saturated alkyl chain of lauric acid is covered on the perovskite films, increasingthe moisture resistance of the film and improving the environmental stability of the devices. Consequently, the lauric acid-modified device achieves a power conversion efficiency (PCE) of 21.36% with a high open-circuit voltage (VOC) of 1.181 V and an improved stability, while the pristine device attains only a PCE of 18.08% under the same condition. The results demonstrate a facile and effective strategy to passivate interfacial defects and improve the performance of PSCs by lauric acid modifying.
1 citations