Abstract
Inverted planar heterojunction solar cells (iPHSCs) were fabricated with novel spiro-bifluorene (CF-Sp-BTh) based hole transport material (HTM) and graphene oxide (GO) modified perovskite (CH3NH3PbI3) as sensitizer. CF-Sp-BTh exhibited relatively high hole mobility and favorable HOMO level with respect to the valence band of CH3NH3PbI3. iPHSC using CF-Sp-BTh HTM and GO (0.5 wt%)-CH3NH3PbI3 achieved the power conversion efficiency (PCE) of ∼14.28%, with open circuit voltage (VOC) of ∼1.07 V and a short circuit current density (JSC) of ∼18.82 mA/cm2. The photovoltaic performance of FTO/CF-Sp-BTh/GO (0.5 wt%)-CH3NH3PbI3/PC61BM/Au was higher compared to pristine CH3NH3PbI3 and other GO-CH3NH3PbI3 hybrid based devices. The photoluminescence decay and electrochemical impedance spectra confirmed an enhanced charge separation and retarded charge recombination of GO-CH3NH3PbI3 hybrid based iPHSCs.
| Original language | English |
|---|---|
| Pages (from-to) | 885-894 |
| Number of pages | 10 |
| Journal | Electrochimica Acta |
| Volume | 319 |
| DOIs | |
| State | Published - 2019.10.1 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Graphene oxide-perovskite hybrid
- Hole transporting materials
- Perovskite solar cell
- Spiro bifluorene based small molecule
Quacquarelli Symonds(QS) Subject Topics
- Engineering - Chemical
- Chemistry
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