.png){kind=icon}
.png){kind=icon}
Return
Investigation of a Novel Tri -Graded CsGeI3-CsSnxGe1-xI3-Cs2AgBiI6 Perovskite Absorbers Architecture integrated with Single Walled Carbon Nanotube (SW-CNT) for Enhanced Spectral Harvesting in 2D Quantum Dot Solar Cells
.png){kind=icon}
PRE
AI
S
J
DOI：10.1016/j.physb.2026.418790.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
• The work proposes a hybrid Quantum dot -based perovskite photovoltaic cell (QD-PPVC) architecture using a graded tri-absorber stack made up of CsGeI3 (Eg = 1.363 eV), CsSn0.5Ge0.5I3 (Eg = 1.5 eV), and Cs2AgBiI6 (Eg = 1.6 eV). • The proposed architecture enables extended solar spectrum utilization enabled by region-selective photon absorption of the graded tri-absorber layers. • The work also introduces a single-walled carbon nanotube (SW-CNT) interlayer between absorber and ETL to enhance charge extraction and suppress recombination losses. • The optimized device configuration: Cu2O / CsGeI3 / CsSn0.5Ge0.5I3 / Cs2AgBiI6 / SW-CNT / SnS2 / FTO achieved superior photovoltaic performance: OPCE of 31.01%, Jsc of 33.51 mA/cm2, Voc of 1.35 V and Fill Factor of 85.67%. • The proposed architecture outperforms comparison architectures: Dual-absorber QD-PPVC of 28.58%, Single CsGeI3 absorber configuration of 25.15%, Single CsSn0.5Ge0.5I3 absorber configuration of 23.28%, and Single Cs2AgBiI6 absorber configuration of 19.86%. • The proposed model demonstrates extended spectral responsivity up to 1100 nm with ∼90% quantum efficiency, exceeding tri-absorber without SW-CNT and dual-absorber devices. • The proposed model provides a synergistic strategy combining bandgap grading and nanocarbon interfacial engineering for next-generation high-efficiency hybrid perovskite photovoltaics.
Keywords:
Quantum dot solar cells
Perovskite photovoltaics
Bandgap grading
Single-walled carbon nanotubes
Spectral harvesting
Journal
P
IF:
0
Papers:
544
Citations:
1
Organization
Cited Papers