12 pages. -- PDF file includes: Experimental Section: Synthesis of QDs; Synthesis of GO/QDs composite; PSCs fabrication; PSMs fabrication. -- PSM encapsulation. -- Characterization. -- Table S1 Confirmed single-junction Perovskite Solar Modules and published journals in the past five years. -- Fig. S1 (a) The TEM and HRTEM images of QDs. (b) Histogram of the size distribution of QDs. (c) The TEM of GO. (d) AFM height image of GO on SiO2/Si. (e) The TEM of GO/QDs composite and the corresponding EDX mapping images. -- Fig. S2 Powder XRD patterns of QDS and GO/QDs composite. -- Fig. S3 FTIR spectra of the fabricated GO, QDS, and GO/QDS films. -- Fig. S4 Temporal evolution of PL intensities of (a) QDs and (b) GO/QDs film heated at 85 °C. -- Fig. S5 Surface SEM images of perovskite. -- Fig. S6 (a) The XRD spectral of the perovskite film with and without modification, (b) the enlarged XRD data at 25-35°. 30.2° is characteristic peaks of CsPbBr3 QDS, correspond to (200) plane. -- Fig. S7 AFM images of (a) pristine perovskite film and (b) perovskite film with GO/QDs interlayer. -- Fig. S8 AFM images of the corresponding Spiro-MeOTAD films deposited on various perovskite. -- Table S2. Fitted TRPL parameters of perovskite films using two exponential fitting. -- Fig. S9 The UPS data of the perovskite film, QDs film, and GO/QDs film. -- Fig. S10 Schematic energy level diagrams of perovskite layer, QDs interlayer, and GO/QDs interlayer. -- Table S3 Detailed parameters to calculate the carrier density. -- Fig. S11 (a) Capacitance−frequency plots; (b-d) dark current-voltage characteristics of the perovskite films measured using the space-charge-limited current (SCLC) method. -- Table S4 The fresh and aged photovoltaic parameters of representative PSMs measured under continuous simulated AM 1.5 light illumination for 500 h. -- Table S5 The detailed parameters for the 1 cm2 PSCs employing P3HT as HTL. -- Fig. S12 The performance of a perovskite solar module certified by a public test center (National Institute of Metrology, China). -- Fig. S13 The degradation images of the perovskite films with different interlayers by dropping a drop of water upon the surfaces. -- Fig. S14 X-ray diffraction (XRD) spectra for perovskite films heated at 100 ℃ in ambient air (80% RH) for 5 days. -- Fig. S15 Illustrations of the encapsulation process of PSMS (not to scale).

Peer reviewed