  The use of self-assembled monolayers (SAMs) with anchoring groups was
considered as an effective approach for interface engineering in perovskite
solar cells with metal oxide charge transporting layers. However, the coating
of SAM layers in PSMs by means of a slot-die is a challenging process due to
the low viscosity of the solutions and the low wettability of the films. In
this study, we integrate a triphenylamine-based polymer, pTPA-TDP, blended with
SAM based on 5-[4-[4-(diphenylamino) phenyl] thiophene-2-carboxylic acid
(TPATC), to address the challenges of uniform slot-die coating and interface
passivation in large-area modules. We fabricated p-i-n oriented PSMs on 50x50
mm2 substrates (12-sub-cells) with NiO hole transport layer (HTL) and organic
interlayers for surface modification. Wetting angle mapping demonstrated that
ununiform regions of the slot-die coated SAM have hydrophobicity with contact
angle values up to 90{\deg}, causing fluctuations in absorber thickness and the
presence of macro-defects at buried interfaces. The incorporation of the
blended interlayer to NiO/perovskite junction homogenized the surface
wettability (contact angle=40{\deg}) and mitigated lattice strain in the
absorber. This enabled the effective use of SAM properties on a large-area
surface, improving energy level alignment and enhancing the power conversion
efficiency (PCE) of the modules from 13.98% to 15.83% and stability (ISOS-L-2,
T80 period) from 500-1000 hours to 1630 hours. Investigation of PSMs upon
cooling till -5 {\deg}C showed that the PCE increased by +0.19%/{\deg}C for
samples with NiO HTL, while using SAM and blended interlayers raised the
coefficient to ~0.40%/{\deg}C due to changes in activation energy and trap
contributions to device performance across a wide temperature range.
