TY - GEN
T1 - Room Temperature Synthesis of Lead-Free Sn/Ge-Based Perovskite Quantum Dots
AU - Chen, Zeying
AU - Rajbhandari, Pravakar P.
AU - Dhakal, Tara P.
N1 - Publisher Copyright: © 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - Metal halide perovskites have received remarkable attention as photovoltaic (PV) devices. These have already achieved power conversion efficiency higher than 23% rivaling that of silicon-based PV. However, these outstanding efficiencies can only be acquired with lead-based perovskites and the devices are chemically unstable in air and moisture. Therefore, the key to the widespread deployment of perovskite-based solar cell will come down to address their "toxicity" and instability problems. We have taken the challenge to replace lead with other nontoxic or less toxic elements, e.g., Sn, and Ge. We have synthesized Cs(Sn,Ge)X3 (X=I, Br, and Cl) quantum dots (QDs) using room temperature process. The XRD data showed that the synthesized QDs were yellow hexagonal phase, which was further confirmed by the hexagonal shape of the TEM images of the crystals.
AB - Metal halide perovskites have received remarkable attention as photovoltaic (PV) devices. These have already achieved power conversion efficiency higher than 23% rivaling that of silicon-based PV. However, these outstanding efficiencies can only be acquired with lead-based perovskites and the devices are chemically unstable in air and moisture. Therefore, the key to the widespread deployment of perovskite-based solar cell will come down to address their "toxicity" and instability problems. We have taken the challenge to replace lead with other nontoxic or less toxic elements, e.g., Sn, and Ge. We have synthesized Cs(Sn,Ge)X3 (X=I, Br, and Cl) quantum dots (QDs) using room temperature process. The XRD data showed that the synthesized QDs were yellow hexagonal phase, which was further confirmed by the hexagonal shape of the TEM images of the crystals.
KW - Lead-free perovskite
KW - doping photoluminescence
KW - nanoparticle
KW - solar cell
UR - https://www.scopus.com/pages/publications/85081557759
U2 - 10.1109/PVSC40753.2019.8980853
DO - 10.1109/PVSC40753.2019.8980853
M3 - Conference contribution
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 447
EP - 450
BT - 2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 46th IEEE Photovoltaic Specialists Conference, PVSC 2019
Y2 - 16 June 2019 through 21 June 2019
ER -