Topic
Perovskite solar cell
About: Perovskite solar cell is a research topic. Over the lifetime, 4701 publications have been published within this topic receiving 216807 citations. The topic is also known as: PSC.
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TL;DR: The short circuit current density of perovskite solar cell (PSC) was boosted by modulating the dominated plane facets of TiO2 electron transport layer (ETL) and the room-temperature process had a great significance for the cost reduction and flexible application of PSCs.
Abstract: The short circuit current density of perovskite solar cell (PSC) was boosted by modulating the dominated plane facets of TiO2 electron transport layer (ETL). Under optimized condition, TiO2 with dominant {001} facets showed (i) low incident light loss, (ii) highly smooth surface and excellent wettability for precursor solution, (iii) efficient electron extraction, and (iv) high conductivity in perovskite photovoltaic application. A current density of 24.19 mA cm–2 was achieved as a value near the maximum limit. The power conversion efficiency was improved to 17.25%, which was the record value of PSCs with DC magnetron sputtered carrier transport layer. What is more, the room-temperature process had a great significance for the cost reduction and flexible application of PSCs.
43 citations
TL;DR: This work indicates that Sm3+ and Eu3+ co-doped ETLs are effective and promising method to enhance the photovoltaic performance and UV stability of PSCs, which can be further applied in other P SCs with different ETL's and co- doping types.
43 citations
TL;DR: In this article, a hole transport layer (HTLTL)-free perovskite cell of 12.6% measured continuously at maximum power point in an accredited laboratory was reported.
Abstract: The determination of certified efficiency values for perovskite solar cells from current–voltage sweeps is under growing discussion. Here, we report for the first time a certified steady-state solar efficiency for a hole transport layer (HTL)-free perovskite cell of 12.6% measured continuously at maximum power point in an accredited laboratory. By applying a molten-salt-based MAPbI3 precursor solution, dense filling and improved perovskite crystallization inside the nanoporous graphite-based monolithic contact scaffold of the cell are achieved. A stabilized photovoltage as high as 1 V is achieved, representing the highest VOC reported for HTL-free MAPbI3-based devices. Charge transport properties are determined by switching from open- to short-circuit conditions. Strong and stable quenching of the photoluminescence indicates effective transportation and extraction of the photoexcited primary charge carriers. The existence of an efficient HTL-free device suggests that these cells are more of an n-p junctio...
43 citations
TL;DR: A comprehensive optical distribution program is employed to calculate the distributions of the optical field intensities with constant thicknesses of the absorbing layer in the top electrode configuration of bifacial PSCs featuring transparent BCP/Ag/MoO3 rear electrodes, which are fabricated through low-temperature processing using thermal evaporation methods.
Abstract: Inorganic–organic hybrid perovskite solar cells (PSCs) are promising devices for providing future clean energy because of their low cost, ease of fabrication, and high efficiencies, similar to those of silicon solar cells. These materials have been investigated for their potential use in bifacial PSCs, which can absorb light from both sides of the electrodes. Here, we fabricated bifacial PSCs featuring transparent BCP/Ag/MoO3 rear electrodes, which we formed through low-temperature processing using thermal evaporation methods. We employed a comprehensive optical distribution program to calculate the distributions of the optical field intensities with constant thicknesses of the absorbing layer in the top electrode configuration. The best PSC having a transparent BCP/Ag/MoO3 electrode achieved PCEs of 13.49% and 9.61% when illuminated from the sides of the indium tin oxide and BCP/Ag/MoO3 electrodes, respectively. We observed significant power enhancement when operating this PSC using mirror reflectors and...
43 citations
TL;DR: Li-TFSI has high doping effects for the spiro-OMeTAD thin films as mentioned in this paper, which directly showed the spin (hole) formation in OO-TAD by adding a dopant lithium bis(trifluoromethanesulfonyl)imide.
Abstract: Electron spin resonance (ESR) spectroscopy of 2,2′,7,7′-tetrakis-(N,N-di-p-methoxyphenylamine)9,9′-spirobifluorene (spiro-OMeTAD) thin films and perovskite (CH3NH3PbI3)/spiro-OMeTAD layered films are reported. Clear ESR signals (g = 2.0030) were observed by adding a dopant lithium bis(trifluoromethanesulfonyl)imide (Li-TFSI) to the spiro-OMeTAD thin films, which directly showed the spin (hole) formation in spiro-OMeTAD by the Li-TFSI doping. The number of spins in the spiro-OMeTAD thin film has increased by more than two orders of magnitude by the Li-TFSI doping under dark conditions, which demonstrates from a microscopic viewpoint that Li-TFSI has high doping effects for the spiro-OMeTAD thin films. Under simulated solar irradiation, the spin density in the spiro-OMeTAD thin films and the perovskite/spiro-OMeTAD layered films largely increased by the Li-TFST doping due to the formation of long-lived holes in spiro-OMeTAD. The transient responses of the number of photogenerated spins, Nspin, of the layere...
43 citations