TY - GEN
T1 - Predicting Open-Circuit Voltages in Atomically-Thin Monolayer Transition Metal Dichalcogenides-Based Solar Cells
AU - Tebyetekerwa, Mike
AU - MacDonald, Daniel
AU - Nguyen, Hieu T.
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - We present an approach to quantify upper limits of open circuit voltages (Voc) that can possibly be achieved from monolayer transition metal dichalcogenides (TMDs) WS2, MoS2, WSe2, and MoSe2-based solar cells, and compare them with state-of-the-art perovskite materials. Spectrally-resolved micro-photoluminescence (μ-PL) and absorption measurements were utilized in the generalised Planck law of emissions to derive quasi-Fermi level splitting values (Δμ) of these monolayers under illumination. The value of Δμ of a certain material represents the highest possible open-circuit voltage of a solar cell fabricated from that material. From our analysis, values close to ∼1.4, ∼1.12, ∼1.06 and ∼0.93 V could be potentially achieved from WS2, MoS2, WSe2, and MoSe2 monolayers-based solar cells under 1-sun illumination. The results reveal the potential of atomically-thin TMDs for high-voltage, ultra-light, flexible, and transparent photovoltaics.
AB - We present an approach to quantify upper limits of open circuit voltages (Voc) that can possibly be achieved from monolayer transition metal dichalcogenides (TMDs) WS2, MoS2, WSe2, and MoSe2-based solar cells, and compare them with state-of-the-art perovskite materials. Spectrally-resolved micro-photoluminescence (μ-PL) and absorption measurements were utilized in the generalised Planck law of emissions to derive quasi-Fermi level splitting values (Δμ) of these monolayers under illumination. The value of Δμ of a certain material represents the highest possible open-circuit voltage of a solar cell fabricated from that material. From our analysis, values close to ∼1.4, ∼1.12, ∼1.06 and ∼0.93 V could be potentially achieved from WS2, MoS2, WSe2, and MoSe2 monolayers-based solar cells under 1-sun illumination. The results reveal the potential of atomically-thin TMDs for high-voltage, ultra-light, flexible, and transparent photovoltaics.
KW - open-circuit voltage
KW - photoluminescence
KW - photovoltaic cells
KW - quasi-Fermi level splitting
KW - transition metal dichalcogenides
KW - two-dimensional materials
UR - http://www.scopus.com/inward/record.url?scp=85081549112&partnerID=8YFLogxK
U2 - 10.1109/PVSC40753.2019.8980641
DO - 10.1109/PVSC40753.2019.8980641
M3 - Conference contribution
AN - SCOPUS:85081549112
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 768
EP - 771
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 -