Enhanced Solar Cell Performance Using Graphene/TiO2 Composite as Electron Transport Layer
| Authors | N. Joshi, A. Pandey |
| Affiliations |
Department of Electronics and Communication Engineering Jaypee Institute of Information Technology Noida, Uttar Pradesh, India |
| Е-mail | neetu.joshi@mail.jiit.ac.in |
| Issue | Volume 18, Year 2026, Number 1 |
| Dates | Received 08 December 2025; revised manuscript received 20 February 2026; published online 25 February 2026 |
| Citation | N. Joshi, A. Pandey, J. Nano- Electron. Phys. 18 No 1, 01029 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(1).01029 |
| PACS Number(s) | 88.40.H – |
| Keywords | Solar cell (51) , ETL (3) , Perovskite (6) , Absorber layer. |
| Annotation |
This paper presents a simulation-based analysis of a tin-based solar cell and compares it with the lead based solar cell. A comparative study is done to analyze the figures of merit of both the solar cells. In the proposed solar cell device, graphene oxide (GO) is used as the hole transport layer (HTL), titanium oxide (TiO2) as the electron transport layer (ETL), fluorine doped tin oxide (FTO) as front contact and gold is used as the back contact, which introduces environmentally friendly perovskite solar cells (PSCs). The suggested design uses the environmentally benign CH3NH3SnI3 as the absorber layer instead of lead based solar cells, which poses environmental issues because of its lead concentration. Graphene Oxide has excellent mobility and carrier concentration capabilities along with cost-effective production methods. Its strategic use as the HTL increases the PSC's operational efficiency. The performance of tin based solar cell has also been compared with different composites of TiO2 mixed with graphene and it is observed that the parameters obtained for TiO2 as ETL layer that are VOC of 0.78 V, a JSC of 32.003 mAcm − 2, FF of 79.99 and a PCE of 12.76 %, can be optimized with graphene to the values of VOC of 1.0766 V, Jsc of 34.254 mAcm − 2, FF of 58.74 and PCE of 21.66%. Impact of CCSE on Power conversion efficiency for various graphene ratios in ETL is analyzed and it is observed that it increases by about 70% of its original value. |
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List of References |
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