TY - JOUR
T1 - Formation of 1-D/3-D Fused Perovskite for Efficient and Moisture Stable Solar Cells
AU - Parashar, Mritunjaya
AU - Singh, Ranbir
AU - Yoo, Kicheon
AU - Lee, Jae Joon
N1 - Publisher Copyright:
© 2021 American Chemical Society.
PY - 2021/3/22
Y1 - 2021/3/22
N2 - Various organic cations (e.g., methylammonium (MA+), butylammonium (BA+), formamidinium (FA+), etc.) have been studied and used in organometallic halide perovskite solar cells (PSCs). Most of the currently used organic cations are protic in nature, which can induce acid-base reactions and, thus, lead to degradation of the perovskites. So far, the role of aprotic cations in PSCs has not been studied much. In the present study, two aprotic cations, namely, trimethylsulfonium (TMS+) and trimethylsulfoxonium (TMSO+), are introduced into lead-based PSCs to form one-dimensional/three-dimensional (TMSPbI3)x(MAPbI3)100-x and (TMSOPbI3)x(MAPbI3)100-x perovskite structures, respectively. This is shown to provide enhanced performance and moisture resistance, thus, increasing the stability and lifespan of the PSCs. The power conversion efficiencies of the (TMSPbI3)x(MAPbI3)100-x and (TMSOPbI3)x(MAPbI3)100-x devices are found to be 19.34 and 19.94%, respectively, compared to 17.11% for the pristine MAPbI3 PSC, along with enhanced open-circuit voltages (VOC) of 1.14 and 1.12 V, respectively, compared to 1.07 V for the pristine MAPbI3 PSC. Furthermore, the effects of TMS+ and TMSO+ upon the perovskite structure, absorption, recombination, and film morphology are discussed in detail. The results of this study will be helpful in the exploration of sulfur-based cations for the development of more stable PSCs.
AB - Various organic cations (e.g., methylammonium (MA+), butylammonium (BA+), formamidinium (FA+), etc.) have been studied and used in organometallic halide perovskite solar cells (PSCs). Most of the currently used organic cations are protic in nature, which can induce acid-base reactions and, thus, lead to degradation of the perovskites. So far, the role of aprotic cations in PSCs has not been studied much. In the present study, two aprotic cations, namely, trimethylsulfonium (TMS+) and trimethylsulfoxonium (TMSO+), are introduced into lead-based PSCs to form one-dimensional/three-dimensional (TMSPbI3)x(MAPbI3)100-x and (TMSOPbI3)x(MAPbI3)100-x perovskite structures, respectively. This is shown to provide enhanced performance and moisture resistance, thus, increasing the stability and lifespan of the PSCs. The power conversion efficiencies of the (TMSPbI3)x(MAPbI3)100-x and (TMSOPbI3)x(MAPbI3)100-x devices are found to be 19.34 and 19.94%, respectively, compared to 17.11% for the pristine MAPbI3 PSC, along with enhanced open-circuit voltages (VOC) of 1.14 and 1.12 V, respectively, compared to 1.07 V for the pristine MAPbI3 PSC. Furthermore, the effects of TMS+ and TMSO+ upon the perovskite structure, absorption, recombination, and film morphology are discussed in detail. The results of this study will be helpful in the exploration of sulfur-based cations for the development of more stable PSCs.
KW - 1-dimensional/3-dimensional (1-D/3-D)
KW - moisture endurance
KW - perovskite solar cells
KW - trimethylsulfonium (TMS)
KW - trimethylsulfoxonium (TMSO)
UR - http://www.scopus.com/inward/record.url?scp=85103491476&partnerID=8YFLogxK
U2 - 10.1021/acsaem.1c00028
DO - 10.1021/acsaem.1c00028
M3 - Article
AN - SCOPUS:85103491476
SN - 2574-0962
VL - 4
SP - 2751
EP - 2760
JO - ACS Applied Energy Materials
JF - ACS Applied Energy Materials
IS - 3
ER -