Effects of Co-Addition of Guanidinium and Cesium to CH[sub.3]NH[sub.3]PbI[sub.3] Perovskite Solar Cells

The effects of guanidinium (C(NH[sub.2] )[sub.3] , GA) and cesium (Cs) co-additions on methylammonium lead iodide (CH[sub.3] NH[sub.3] PbI[sub.3] , MAPbI[sub.3] ) perovskite solar cells were investigated. The first-principles calculations on the density of the states and band structures showed a red...

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Bibliographic Details
Published inInorganics Vol. 11; no. 7
Main Authors Oku, Takeo, Uchiya, Shoma, Okumura, Riku, Suzuki, Atsushi, Ono, Iori, Fukunishi, Sakiko, Tachikawa, Tomoharu, Hasegawa, Tomoya
Format Journal Article
LanguageEnglish
Published MDPI AG 01.06.2023
Subjects
Cesium
Halides
Identification and classification
Influence
Lead compounds
Nitrogen compounds
Perovskite
Properties
Solar batteries
Solar cells
Japan
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Summary:The effects of guanidinium (C(NH[sub.2] )[sub.3] , GA) and cesium (Cs) co-additions on methylammonium lead iodide (CH[sub.3] NH[sub.3] PbI[sub.3] , MAPbI[sub.3] ) perovskite solar cells were investigated. The first-principles calculations on the density of the states and band structures showed a reduction in the total energy by the GA addition. Although the calculation showed that the co-addition of the GA/Cs to the MAPbI[sub.3] perovskite could decrease the carrier mobilities, and the addition of GA/Cs improved the device performance. This result would be due to a facilitation of grain growth and a suppression of the defects from the GA/Cs addition. The changes to the conversion efficiencies of the device with the best performance were small, which indicates that the present co-addition of GA/Cs is effective for the stability of the devices.
ISSN:2304-6740
2304-6740
DOI:10.3390/inorganics11070273