PTAA Polymer for Perovskite Solar Cells, 1g

PTAA Polymer for Perovskite Solar Cells, 1g

PTAA, Synonyms. Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine], Poly(triaryl amine) 

Perovskite solar cells (PSCs) based on organic–inorganic metal halide have been rapidly developed in recent years. The technology progress enables a power conversion efficiency (PCE) of PSCs to exceed 22%, which is way beyond that of traditional solar cells and thus are considered the future of next generation solar cells.

Poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine], PTAA, is an excellent hole-transporting and electron-blocking material for perovskite solar cells owing to its hole-rich components. Recently, PTAA has been developed as a hole transport layer (HTL), considering its matched highest occupied molecular orbital (HOMO) energy level (5.2 eV) with the valence band maximum (VBM) of perovskites. Comparing to spiro-OMeTAD (2,2′,7,7′-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spiro-bifluorene), which is the most widely used hole transport materials, PTAA-based devices have much lower thermal degradation rate than spiro-OMeTAD-based devices thus it has been gaining more attention.

Technical Data:

References:

[1]: Defect passivation using ultrathin PTAA layers for efficient and stable perovskite solar cells with a high fill factor and eliminated hysteresis. Journal of Materials Chemistry A 7, no. 46 (2019): 26421-26428.

[2]: Sequentially fluorinated PTAA polymers for enhancing VOC of high‐performance perovskite solar cells. Advanced Energy Materials 8, no. 29 (2018): 1801668.

[3]: Lessons learned from spiro-OMeTAD and PTAA in perovskite solar cells. Energy & Environmental Science (2021).