Downshifting of highly energetic photons and energy transfer by Mn-doped perovskite CsPbCl3 nanocrystals in hybrid organic/silicon nanostructured solar cells

Achieving a Record Open‐Circuit Voltage for Organic/Si Hybrid Solar Cells by Improving Junction Quality

“…Recently, Fukata and co‐workers deposited Mn‐doped CsPbCl 3 nanocrystals as a downshift layer to the interface of PEDOT:PSS/Si nanotip solar cells, which led to the increase of short‐circuit current density ( J SC ) from 32.08 to 37.79 mA cm −2 . [ 14 ] He and co‐workers introduced graphene quantum dots into PEDOT:PSS films, and the J SC of organic/Si pyramid solar cells increased from 32.11 to 36.26 mA cm −2 . [ 15 ] Therefore, the use of photon downconversion materials in PEDOT:PSS/nanostructured Si solar cells can further effectively improve the J SC of photovoltaic devices.…”

Cesium Manganese Bromide Nanocrystal Sensitizers for Broadband Vis-to-NIR Downshifting

“… 11 , 24 Instead, halide perovskites are ideal for substitutional doping due to the softness and strong ionicity of their lattice, and additionally they offer very high absorption cross sections. 2 , 5 , 25 − 29 Various reports have shown that in lead halide perovskites a downshifted luminescence in the visible and infrared spectral range can be achieved through doping with divalent cations (for instance, Cd 2+ , Mn 2+ ), 30 , 31 trivalent cations (Ln 3+ ), 27 , 32 , 33 or a combination thereof. 28 Yet, the toxicity and stability issues of lead-based perovskites are a strong drive toward alternative metal halides, 34 − 37 and several Pb-free double perovskites (e.g., Cs 2 AgInCl 6 , 38 − 40 Cs 2 AgBiX 6 (X = Cl, Br), 39 , 41 and Cs 3 Bi 2 Br 9 39 ) have been synthesized and tested as hosts.…”

Hexamethyldisilazane-assisted Mn2+ doping of perovskite nanocrystals under ambient conditions

“…As reported, Mn 2+ doping resulted in a new recombination pathway being generated that promoted exciton-to-Mn 2+ energy transfer, explaining the progressive decline in emission peak intensity at 406 nm with the increase of Mn content, followed by fluorescence enhancement in the broad band at around 600 nm. 54 Table S1 in the ESI† further lists the summary of PL peak positions, concentration of Mn 2+ in the as-synthesized NCs calculated from the ICP test, and PLQY of the various Mn 2+ -doped CsPbCl 3 NCs. The results show that with the increase of MnCl 2 feeding amount, the concentration of Mn 2+ (labelled as the Mn : (Mn + Pb)) in the resulting NCs gradually increases and reaches a maximum value of 53%.…”