organic–inorganic hybrid perovskite solar cells (pscs) have received considerable attentions due to their low cost easy fabrication and high power conversion efficiency (pce) which achieved a certified pce of 22.7%. to date most of high efficiency pscs were fabricated based on organic hole transporting materials (htms) such as molecular spiro-meotad or polymeric ptaa.
the recently certified efficiency of 22.7% makes perovskite solar cells (pscs) rise to the top among the thin film technologies of photovoltaics. the research activities of pscs have been triggered by the ground-breaking report on a 9.7% efficient and 500 h-stable solid-state perovskite solar cell employing methylammonium lead iodide adsorbed on mesoporous tio2 film and an organic hole
perovskite . perovskite (pronunciation / p r v s k a t /) is a calcium titanium oxide mineral composed of calcium titanate (ca ti o 3).its name is also applied to the class of compounds which have the same type of crystal structure as catio 3 (xii a 2+ vi b 4+ x 2 3) known as the perovskite structure.
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amelioration of the mobility and in particular the thermal stability of a hole-transporting molecular semiconductor is a practicable strategy to attain the enhancement of both power conversion efficiency (pce) and operational durability of perovskite solar cells (pscs). here a cost-effective double-helicene-based molecular semiconductor (dbc-omedpa) is synthesized for a solution-deposited
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currently the most efficient perovskite solar cells (pscs) mainly use planar and mesoporous titanium dioxide (tio2) as an electron-transport layer (etl). however because of its intrinsic photocatalytic properties tio2 can decompose perovskite absorber and lead to poor stability under solar illumination (ultraviolet light). herein a simplified architectural etl-free psc with enhanced
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