TY - JOUR
T1 - Comparison of the sputtered TiO2 anatase and rutile thin films as electron transporting layers in perovskite solar cells
AU - Shahvaranfard, Fahimeh
AU - Li, Ning
AU - Hosseinpour, Saman
AU - Hejazi, Seyedsina
AU - Zhang, Kaicheng
AU - Altomare, Marco
AU - Schmuki, Patrik
AU - Brabec, Christoph J.
PY - 2021/10/28
Y1 - 2021/10/28
N2 - We examine comparatively the performance of sputtered TiO2 rutile and anatase thin films as an electron transport layer (ETL) in MAPbI3-based perovskite solar cells. Both anatase and rutile TiO2 ETLs are deposited (on fluorine-doped tin oxide [FTO] substrates) by magnetron sputtering in the form of nanocrystalline thin films. We systematically investigate the role of crystallographic phase composition of TiO2 ETLs on the photovoltaic performance of perovskite solar cells. The champion power conversion efficiencies (PCEs) of 18.4% and 17.7% under reverse scan mode are obtained for perovskite solar cells based on TiO2 anatase and TiO2 rutile ETL, respectively. The results show that the magnetron sputtering deposited ETLs differ from each other only in their phase composition while the overall performance of the devices is not greatly affected by the crystallographic phase of the TiO2 ETLs. Our results point to an important fact that for a proper and reliable comparison between the performance of TiO2 anatase and rutile ETLs, it is crucial to investigate films of similar morphology and structure that are synthesize under similar conditions.
AB - We examine comparatively the performance of sputtered TiO2 rutile and anatase thin films as an electron transport layer (ETL) in MAPbI3-based perovskite solar cells. Both anatase and rutile TiO2 ETLs are deposited (on fluorine-doped tin oxide [FTO] substrates) by magnetron sputtering in the form of nanocrystalline thin films. We systematically investigate the role of crystallographic phase composition of TiO2 ETLs on the photovoltaic performance of perovskite solar cells. The champion power conversion efficiencies (PCEs) of 18.4% and 17.7% under reverse scan mode are obtained for perovskite solar cells based on TiO2 anatase and TiO2 rutile ETL, respectively. The results show that the magnetron sputtering deposited ETLs differ from each other only in their phase composition while the overall performance of the devices is not greatly affected by the crystallographic phase of the TiO2 ETLs. Our results point to an important fact that for a proper and reliable comparison between the performance of TiO2 anatase and rutile ETLs, it is crucial to investigate films of similar morphology and structure that are synthesize under similar conditions.
KW - magnetron sputtering
KW - perovskite solar cell
KW - TiO2anatase
KW - TiO2rutile
UR - https://onlinelibrary.wiley.com/doi/10.1002/nano.202100306
U2 - 10.1002/nano.202100306
DO - 10.1002/nano.202100306
M3 - Article
SN - 2688-4011
VL - 3
SP - 990
EP - 997
JO - Nano Select
JF - Nano Select
IS - 5
ER -
