TY - JOUR
T1 - Phenylhydrazinium Iodide for Surface Passivation and Defects Suppression in Perovskite Solar Cells
AU - Laskar, Md Ashiqur Rahman
AU - Luo, Wenqin
AU - Ghimire, Nabin
AU - Chowdhury, Ashraful Haider
AU - Bahrami, Behzad
AU - Gurung, Ashim
AU - Reza, Khan Mamun
AU - Pathak, Rajesh
AU - Bobba, Raja Sekhar
AU - Lamsal, Buddhi Sagar
AU - Chen, Ke
AU - Rahman, Md Tawabur
AU - Rahman, Sheikh Ifatur
AU - Emshadi, Khalid
AU - Xu, Tingting
AU - Liang, Mao
AU - Zhang, Wen Hua
AU - Qiao, Qiquan
N1 - Funding Information:
The authors thank EDA University Center Program (ED18DEN3030025), NSF MRI (1428992), SD BoR R&D Grant Program, and Planning IUCRC CEPS Projects to support this research work. All findings or information available in this paper do not reflect the views of these funding agencies/programs.
Publisher Copyright:
© 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2020/5/1
Y1 - 2020/5/1
N2 - In recent years, hybrid perovskite solar cells (HPSCs) have received considerable research attention due to their impressive photovoltaic performance and low-temperature solution processing capability. However, there remain challenges related to defect passivation and enhancing the charge carrier dynamics of the perovskites, to further increase the power conversion efficiency of HPSCs. In this work, the use of a novel material, phenylhydrazinium iodide (PHAI), as an additive in MAPbI3 perovskite for defect minimization and enhancement of the charge carrier dynamics of inverted HPSCs is reported. Incorporation of the PHAI in perovskite precursor solution facilitates controlled crystallization, higher carrier lifetime, as well as less recombination. In addition, PHAI additive treated HPSCs exhibit lower density of filled trap states (1010 cm−2) in perovskite grain boundaries, higher charge carrier mobility (≈11 × 10−4 cm2 V−1 s), and enhanced power conversion efficiency (≈18%) that corresponds to a ≈20% improvement in comparison to the pristine devices.
AB - In recent years, hybrid perovskite solar cells (HPSCs) have received considerable research attention due to their impressive photovoltaic performance and low-temperature solution processing capability. However, there remain challenges related to defect passivation and enhancing the charge carrier dynamics of the perovskites, to further increase the power conversion efficiency of HPSCs. In this work, the use of a novel material, phenylhydrazinium iodide (PHAI), as an additive in MAPbI3 perovskite for defect minimization and enhancement of the charge carrier dynamics of inverted HPSCs is reported. Incorporation of the PHAI in perovskite precursor solution facilitates controlled crystallization, higher carrier lifetime, as well as less recombination. In addition, PHAI additive treated HPSCs exhibit lower density of filled trap states (1010 cm−2) in perovskite grain boundaries, higher charge carrier mobility (≈11 × 10−4 cm2 V−1 s), and enhanced power conversion efficiency (≈18%) that corresponds to a ≈20% improvement in comparison to the pristine devices.
KW - additive material
KW - defect suppression
KW - perovskite
KW - solar cell
KW - surface passivation
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U2 - 10.1002/adfm.202000778
DO - 10.1002/adfm.202000778
M3 - Article
AN - SCOPUS:85082971732
SN - 1057-9257
VL - 30
JO - Advanced Materials for Optics and Electronics
JF - Advanced Materials for Optics and Electronics
IS - 22
M1 - 2000778
ER -