TY - JOUR
T1 - Solution-processable antimony-based light-absorbing materials beyond lead halide perovskites
AU - Boopathi, Karunakara Moorthy
AU - Karuppuswamy, Priyadharsini
AU - Singh, Anupriya
AU - Hanmandlu, Chintam
AU - Lin, Lin
AU - Abbas, Syed Ali
AU - Chang, Chien Cheng
AU - Wang, Pen Cheng
AU - Li, Gang
AU - Chu, Chih Wei
PY - 2017/1/1
Y1 - 2017/1/1
N2 - Organic-inorganic lead halide perovskites have recently emerged as highly competitive light absorbing materials for low cost solution-processable photovoltaic devices. With the high efficiency already achieved, removing the toxicity, i.e., lead-free and stability are the key obstacles for perovskite solar cells. Here, we report the synthesis of an antimony (Sb)-based hybrid material having the composition of A3Sb2I9[A = CH3NH3(MA), Cs] and an investigation of its potential photovoltaic applications. Sb-based perovskite-like materials exhibited attractive absorbance properties, with the band gaps of MA3Sb2I9and Cs3Sb2I9measured to be 1.95 and 2.0 eV, respectively. X-ray photoelectron spectroscopy confirmed the formation of stoichiometric perovskites from appropriate precursor molar ratios incorporated with hydroiodic acid (HI). Planar hybrid Sb-based solar cells exhibited negligible hysteresis and reproducible power output under working conditions. A power conversion efficiency of 2.04% was achieved by the MA3Sb2I9perovskite-based device - the highest reported to date for a Sb-based perovskite solar cell.
AB - Organic-inorganic lead halide perovskites have recently emerged as highly competitive light absorbing materials for low cost solution-processable photovoltaic devices. With the high efficiency already achieved, removing the toxicity, i.e., lead-free and stability are the key obstacles for perovskite solar cells. Here, we report the synthesis of an antimony (Sb)-based hybrid material having the composition of A3Sb2I9[A = CH3NH3(MA), Cs] and an investigation of its potential photovoltaic applications. Sb-based perovskite-like materials exhibited attractive absorbance properties, with the band gaps of MA3Sb2I9and Cs3Sb2I9measured to be 1.95 and 2.0 eV, respectively. X-ray photoelectron spectroscopy confirmed the formation of stoichiometric perovskites from appropriate precursor molar ratios incorporated with hydroiodic acid (HI). Planar hybrid Sb-based solar cells exhibited negligible hysteresis and reproducible power output under working conditions. A power conversion efficiency of 2.04% was achieved by the MA3Sb2I9perovskite-based device - the highest reported to date for a Sb-based perovskite solar cell.
UR - http://www.scopus.com/inward/record.url?scp=85031128279&partnerID=8YFLogxK
U2 - 10.1039/c7ta06679a
DO - 10.1039/c7ta06679a
M3 - Journal article
VL - 5
SP - 20843
EP - 20850
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 39
ER -