Effect of the doping of PC61BM electron transport layer with carbon nanodots on the performance of inverted planar MAPbI3 perovskite solar cells
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Subair, RiyasDi Girolamo, Diego
Bodik, Michal
Nadazdy, Vojtech
Li, Bo
Nadazdy, Peter
Marković, Zoran M.
Benkovicova, Monika
Chlpik, Juraj
Kotlar, Mario
Halahovets, Yuriy
Šiffalovič, Peter
Jergel, Matej
Tian, Jianjun
Brunetti, Francesca
Majkova, Eva
Article (Published version)
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© 2019 International Solar Energy Society
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The doping effect of carbon nanodots (CNDs) in the PC61BM electron-transport layer on the performance of inverted planar MAPbI3 perovskite solar cells (PSCs) having two different kinds of the hole-transport layer, namely organic PEDOT:PSS and inorganic NiOx, was investigated. The CH3NH3PbI3 perovskite layer was deposited in air at 35% humidity. An average 11% and 12% enhancement of the power conversion efficiency (PCE) was achieved for 1 wt% CNDs doping in the PSCs with PEDOT:PSS and NiOx, respectively. This improvement is attributed to high electron density of CNDs resulting in a triple increase of the electrical conductivity of the PC61BM layer and passivation of the perovskite/PC61BM interface that is reflected by an increase of the open-circuit voltage. In line with this, parallel resistance and fill factor of the PSCs are also improved. Moreover, the energy-resolved electrochemical impedance spectroscopy revealed additional free-charge carriers in the PC61BM layer generated under ...illumination that were detected via the polaron states formation in the band gap with positive effect on the short-circuit current. All these factors contribute to the PCE improvement. Stability tests of the PSC with PEDOT:PSS under a continuous 24 hour 1.5 AM illumination showed a five times smaller final PCE decrease for the 1 wt% CNDs doping of the PC61BM layer comparing to the undoped counterpart. The passivation effect of CNDs, namely electron filling the traps formed by the photo-dimerization and photo-oxidation of PC61BM molecules, is responsible for this remarkable improvement of the short-term stability. © 2019 International Solar Energy Society
Keywords:
Inverted planar perovskite solar cell / Electron transport layer doping / Carbon nanodots / Interface engineering / Stability improvement / Energy-resolved impedance spectroscopySource:
Solar Energy, 2019, 189, 426-434Funding / projects:
- Slovak Research and Development Agency [SK-CN-RD-18-0006]
- Vedecka grantova agentura MSVVaS SR a SAV (VEGA) [2/0081/18]
- European Cooperation in Science and Technology (COST) [MP1307 -STSM 38756]
- Research & Development Operational Programme - ERDF [ITMS 26240220028]
- V4-Korea/JRP/20I8/69/PPL
DOI: 10.1016/j.solener.2019.07.088
ISSN: 0038-092X
WoS: 000485206600044
Scopus: 2-s2.0-85070109216
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VinčaTY - JOUR AU - Subair, Riyas AU - Di Girolamo, Diego AU - Bodik, Michal AU - Nadazdy, Vojtech AU - Li, Bo AU - Nadazdy, Peter AU - Marković, Zoran M. AU - Benkovicova, Monika AU - Chlpik, Juraj AU - Kotlar, Mario AU - Halahovets, Yuriy AU - Šiffalovič, Peter AU - Jergel, Matej AU - Tian, Jianjun AU - Brunetti, Francesca AU - Majkova, Eva PY - 2019 UR - https://vinar.vin.bg.ac.rs/handle/123456789/8435 AB - The doping effect of carbon nanodots (CNDs) in the PC61BM electron-transport layer on the performance of inverted planar MAPbI3 perovskite solar cells (PSCs) having two different kinds of the hole-transport layer, namely organic PEDOT:PSS and inorganic NiOx, was investigated. The CH3NH3PbI3 perovskite layer was deposited in air at 35% humidity. An average 11% and 12% enhancement of the power conversion efficiency (PCE) was achieved for 1 wt% CNDs doping in the PSCs with PEDOT:PSS and NiOx, respectively. This improvement is attributed to high electron density of CNDs resulting in a triple increase of the electrical conductivity of the PC61BM layer and passivation of the perovskite/PC61BM interface that is reflected by an increase of the open-circuit voltage. In line with this, parallel resistance and fill factor of the PSCs are also improved. Moreover, the energy-resolved electrochemical impedance spectroscopy revealed additional free-charge carriers in the PC61BM layer generated under illumination that were detected via the polaron states formation in the band gap with positive effect on the short-circuit current. All these factors contribute to the PCE improvement. Stability tests of the PSC with PEDOT:PSS under a continuous 24 hour 1.5 AM illumination showed a five times smaller final PCE decrease for the 1 wt% CNDs doping of the PC61BM layer comparing to the undoped counterpart. The passivation effect of CNDs, namely electron filling the traps formed by the photo-dimerization and photo-oxidation of PC61BM molecules, is responsible for this remarkable improvement of the short-term stability. © 2019 International Solar Energy Society T2 - Solar Energy T1 - Effect of the doping of PC61BM electron transport layer with carbon nanodots on the performance of inverted planar MAPbI3 perovskite solar cells VL - 189 SP - 426 EP - 434 DO - 10.1016/j.solener.2019.07.088 ER -
@article{ author = "Subair, Riyas and Di Girolamo, Diego and Bodik, Michal and Nadazdy, Vojtech and Li, Bo and Nadazdy, Peter and Marković, Zoran M. and Benkovicova, Monika and Chlpik, Juraj and Kotlar, Mario and Halahovets, Yuriy and Šiffalovič, Peter and Jergel, Matej and Tian, Jianjun and Brunetti, Francesca and Majkova, Eva", year = "2019", abstract = "The doping effect of carbon nanodots (CNDs) in the PC61BM electron-transport layer on the performance of inverted planar MAPbI3 perovskite solar cells (PSCs) having two different kinds of the hole-transport layer, namely organic PEDOT:PSS and inorganic NiOx, was investigated. The CH3NH3PbI3 perovskite layer was deposited in air at 35% humidity. An average 11% and 12% enhancement of the power conversion efficiency (PCE) was achieved for 1 wt% CNDs doping in the PSCs with PEDOT:PSS and NiOx, respectively. This improvement is attributed to high electron density of CNDs resulting in a triple increase of the electrical conductivity of the PC61BM layer and passivation of the perovskite/PC61BM interface that is reflected by an increase of the open-circuit voltage. In line with this, parallel resistance and fill factor of the PSCs are also improved. Moreover, the energy-resolved electrochemical impedance spectroscopy revealed additional free-charge carriers in the PC61BM layer generated under illumination that were detected via the polaron states formation in the band gap with positive effect on the short-circuit current. All these factors contribute to the PCE improvement. Stability tests of the PSC with PEDOT:PSS under a continuous 24 hour 1.5 AM illumination showed a five times smaller final PCE decrease for the 1 wt% CNDs doping of the PC61BM layer comparing to the undoped counterpart. The passivation effect of CNDs, namely electron filling the traps formed by the photo-dimerization and photo-oxidation of PC61BM molecules, is responsible for this remarkable improvement of the short-term stability. © 2019 International Solar Energy Society", journal = "Solar Energy", title = "Effect of the doping of PC61BM electron transport layer with carbon nanodots on the performance of inverted planar MAPbI3 perovskite solar cells", volume = "189", pages = "426-434", doi = "10.1016/j.solener.2019.07.088" }
Subair, R., Di Girolamo, D., Bodik, M., Nadazdy, V., Li, B., Nadazdy, P., Marković, Z. M., Benkovicova, M., Chlpik, J., Kotlar, M., Halahovets, Y., Šiffalovič, P., Jergel, M., Tian, J., Brunetti, F.,& Majkova, E.. (2019). Effect of the doping of PC61BM electron transport layer with carbon nanodots on the performance of inverted planar MAPbI3 perovskite solar cells. in Solar Energy, 189, 426-434. https://doi.org/10.1016/j.solener.2019.07.088
Subair R, Di Girolamo D, Bodik M, Nadazdy V, Li B, Nadazdy P, Marković ZM, Benkovicova M, Chlpik J, Kotlar M, Halahovets Y, Šiffalovič P, Jergel M, Tian J, Brunetti F, Majkova E. Effect of the doping of PC61BM electron transport layer with carbon nanodots on the performance of inverted planar MAPbI3 perovskite solar cells. in Solar Energy. 2019;189:426-434. doi:10.1016/j.solener.2019.07.088 .
Subair, Riyas, Di Girolamo, Diego, Bodik, Michal, Nadazdy, Vojtech, Li, Bo, Nadazdy, Peter, Marković, Zoran M., Benkovicova, Monika, Chlpik, Juraj, Kotlar, Mario, Halahovets, Yuriy, Šiffalovič, Peter, Jergel, Matej, Tian, Jianjun, Brunetti, Francesca, Majkova, Eva, "Effect of the doping of PC61BM electron transport layer with carbon nanodots on the performance of inverted planar MAPbI3 perovskite solar cells" in Solar Energy, 189 (2019):426-434, https://doi.org/10.1016/j.solener.2019.07.088 . .