Kim, Jae-Yup Baek, Woonhyuk Kim, Soyoung Kang, Gumin Han, Il Ki Hyeon, Taeghwan Park, Minwoo 2024-01-19T18:32:51Z 2024-01-19T18:32:51Z 2021-09-05 2019-12-01 0169-4332 https://pubs.kist.re.kr/handle/201004/119218 Extensive studies have been performed to improve the environmental stability of perovskite solar cells (PSCs) with the use of inorganic charge transport layers (CTLs). However, for n-i-p structures, it is difficult to deposit p-type inorganic nanocrystals onto perovskites to form the CTLs because they are usually prepared in polar solvents. In this regard, hydrophobic nanoparticles dispersed in nonpolar solvents would be beneficial for their deposition onto the perovskites, thus leading to the formation of a hole transport layer (HTL). In this work, we report on the preparation of monodispersed CuIn1.5Se3 (CISe) quantum dots (QDs) (diameter = 4 nm) for the design of PSCs based on all-inorganic CTLs. By means of efficient hole injection and transfer process through the CISe-HTLs, impressive power conversion efficiencies (PCEs) of 13.72% and 12.19% for active areas of 0.12 cm(2) and 1.0 cm(2) are achieved, respectively, and the devices exhibit hysteresis-less behaviors. Furthermore, the devices show excellent PCE retentions of 89.2% and 74.9% after 30 d relative to their initial values at relative humidity of 25% and 50%, respectively. The hydrophobic QDs effectively suppress the penetration of moisture such that the device maintains its stability in humid environments. English ELSEVIER LIGHT-EMITTING-DIODES HIGH-PERFORMANCE DOPED TIO2 EFFICIENT STABILITY DEGRADATION NIOX NANOCRYSTALS FILM Moisture proof hole transport layers based on CISe quantum dots for highly stable and large active area perovskite solar cells Article 10.1016/j.apsusc.2019.143610 1 APPLIED SURFACE SCIENCE, v.496 APPLIED SURFACE SCIENCE 496 scie scopus 000488957400018 2-s2.0-85070775880 Chemistry, Physical Materials Science, Coatings & Films Physics, Applied Physics, Condensed Matter Chemistry Materials Science Physics Article LIGHT-EMITTING-DIODES HIGH-PERFORMANCE DOPED TIO2 EFFICIENT STABILITY DEGRADATION NIOX NANOCRYSTALS FILM Perovskite solar cells CISe Quantum dots Stability Organic ligands Active area