Alloyed (Cu2SnS3)x(ZnS)1−x quantum dots as a hole-transporting layer for efficient and stable perovskite solar cells

Cu2SnS3 Nanocrystal-Based Hole-Transport Layer for Carbon Electrode-Based Perovskite Solar Cells

“…The particle sizes of Cu 2 SnS 3 are mainly between 7 and 15 nm, and the average particle size is around 10.6 nm. Compared with previous publications focusing on Cu 2 SnS 3 nanocrystal HTLs, the sizes of our Cu 2 SnS 3 nanocrystals are slightly larger than those of Mao et al and much smaller than those of Nima Taghavinia et al, , mainly due to the slightly modified hot-injection method employed in our synthesis process. Meanwhile, our Cu 2 SnS 3 nanocrystals displayed an excellent dispersive ability without any aggregations in hexanethiol, which can ensure a much higher concentration of Cu 2 SnS 3 ink (100 mg mL –1 ).…”

“…Meanwhile, ZnS-modified Cu 2 SnS 3 quantum dots were explored by Mao et al to be better HTLs than pristine Cu 2 SnS 3 . However, in their study, pristine Cu 2 SnS 3 quantum dots could still display a champion PCE of 15.96% for FAPbI 3 PSCs, which is much better than the results of Nima Taghavinia et al , Although the above reports demonstrate that Cu 2 SnS 3 nanocrystals or quantum dots can function as potential HTLs for PSCs, their reported PCEs are much lower those of metal electrode based-PSCs. Meanwhile, the potential of Cu 2 SnS 3 as an HTL in carbon electrode-based PSCs is not explored thus far.…”

“…NiO nanocrystals were spin-coated onto MAPbI 3 perovskite films, which promote the separation and extraction of photogenerated holes, thus demonstrating a PCE of 13.6% . Recently, Cu 2 SnS 3 , which contains nontoxic and earth-abundant Cu, Sn, and S elements, has been explored by some research groups as a potential inorganic HTL for metal electrode-based PSCs. , Both zincblende and wurtzite Cu 2 SnS 3 nanocrystals were synthesized by Nima Taghavinia et al Their potential to function as HTLs was carefully studied and compared, which indicates that zincblende Cu 2 SnS 3 (PCE = 7.87%) is a less favorable HTL for Cs 0.05 (MA 0.17 FA 0.83 ) 0.95 Pb­(I 0.83 Br 0.17 ) 3 PSCs compared with wurtzite Cu 2 SnS 3 (PCE = 13.01%). Meanwhile, ZnS-modified Cu 2 SnS 3 quantum dots were explored by Mao et al to be better HTLs than pristine Cu 2 SnS 3 .…”

Recent Development and Directions in Printed Perovskite Solar Cells

“…For the PSCs, a high efficiency of 17.2% was achieved with (Cu 2 SnS 3 ) 0.7 (ZnS) 0.3 and stability also of improved by alloying with ZnS. [ 76 ] Inverted planar PSCs with poly (N,N‐bis (4‐butylphenyl)‐ N , N ‐bis (phenyl) benzidine) (PTPD) layer as a hole transport layer (HTL) show high power conversion efficiencies (PCEs) above 20%. In addition, the MAPbI 3 perovskite film on the 75 kDa (atomic mass unit kilodalton) PTPD is smoother with higher crystallinity and lower defect density.…”

“…The P3CT‐based PSCs show much lower radiation less recombination and achieve a champion PCE of 21.33% with a high fill factor (FF) of 83.6%. It is impressive that when the device area is increased to 0.80 cm 2 , a PCE of 19.65% [ 76 ] can still be achieved for the PSCs based on P3CT HTL alloyed (Cu 2 SnS 3 ) x (ZnS) 1− x quantum dots (QDs) were made by combining Cu 2 SnS 3 and ZnS. The alloy was applied as an inorganic hole transport layer to PSCs.…”