Abstract
Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/ITO/PEDOT:PSS/MAPbI3/PCBM/Ag device configuration. Devices fabricated using the Pb-acetate precursors showed an efficiency of 13%. This work reports the effect of adding excess lead to the precursor and its impact on the light-induced degradation of efficiency. It is found that 5% excess lead is best for devices regarding the performance and stability and devices retained greater than 50% of the initial efficiency after 2 h of prolonged irradiation. We attribute this phenomenon to the formation of PbI 2 which induces passivation in the grain-boundaries.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 189-193 |
| Number of pages | 5 |
| Journal | MRS Communications |
| Volume | 9 |
| Issue number | 1 |
| DOIs | |
| State | Published - Mar 1 2019 |
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ASJC Scopus subject areas
- Materials Science(all)
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Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation. / Yerramilli, Aditya S.; Chen, Yuanqing; Alford, Terry.
In: MRS Communications, Vol. 9, No. 1, 01.03.2019, p. 189-193.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of excessive Pb on the stability and performance of Pb-halide perovskite solar cells against photo-induced degradation
AU - Yerramilli, Aditya S.
AU - Chen, Yuanqing
AU - Alford, Terry
PY - 2019/3/1
Y1 - 2019/3/1
N2 - Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/ITO/PEDOT:PSS/MAPbI3/PCBM/Ag device configuration. Devices fabricated using the Pb-acetate precursors showed an efficiency of 13%. This work reports the effect of adding excess lead to the precursor and its impact on the light-induced degradation of efficiency. It is found that 5% excess lead is best for devices regarding the performance and stability and devices retained greater than 50% of the initial efficiency after 2 h of prolonged irradiation. We attribute this phenomenon to the formation of PbI 2 which induces passivation in the grain-boundaries.
AB - Perovskite solar cells have evolved significantly since their inception. However, stability is still a major concern. We fabricated devices using a glass/ITO/PEDOT:PSS/MAPbI3/PCBM/Ag device configuration. Devices fabricated using the Pb-acetate precursors showed an efficiency of 13%. This work reports the effect of adding excess lead to the precursor and its impact on the light-induced degradation of efficiency. It is found that 5% excess lead is best for devices regarding the performance and stability and devices retained greater than 50% of the initial efficiency after 2 h of prolonged irradiation. We attribute this phenomenon to the formation of PbI 2 which induces passivation in the grain-boundaries.
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U2 - 10.1557/mrc.2018.231
DO - 10.1557/mrc.2018.231
M3 - Article
VL - 9
SP - 189
EP - 193
JO - MRS Communications
JF - MRS Communications
SN - 2159-6859
IS - 1
ER -