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P-11 — Hole Transport Material

Higher efficiency and superior stability than the widely used Spiro-OMeTAD.

Role
HTM
Material type
Small Molecule
Solvent system
Aromatic
LUMO / HOMO
−2.33 / −5.34
Device architecture
n-i-p & p-i-n
Power conversion efficiency
23.6%

0.1 cm² cell

HTM · Small Molecule

P-11

P-11 HTM is a solution-processable organic small molecule designed for n-i-p perovskite solar cells. It delivers higher efficiency and superior stability than the widely used Spiro-OMeTAD in device applications.

Measured performance vs Spiro-OMeTAD (PCE 21.0%), 0.1 cm² cell

Vₒᴄ
1.131V
Jₛᴄ
25.7mA/cm²
FF
81.0%
PCE
23.6%

Typical device architecture

GlassITOSnO₂PVSKPassivationP-11Ag
Layer stack of a P-11 device showing glass, ITO, transport layers, perovskite absorber, passivation and electrode.
Device data

Measured performance of P-11

Data measured on 0.1 cm² cells in our partner laboratories.

Energy level alignment for P-11.
Energy level alignmentValence and conduction band positions of the perovskite absorber against the transport material.
Current density – voltage for P-11.
Current density – voltageLight J–V characteristics measured on a 0.1 cm² cell, against the stated reference material.
Photostability and thermal stability for P-11.
Photostability and thermal stabilityNormalised power conversion efficiency over 2000 hours under 0.9 sun illumination and at 85°C.

Processing notes

  • For p-i-n devices, the P-11 HTM (bottom contact) is only compatible with vacuum-deposited perovskite layers because it can be affected by the solvents used in subsequent processing.

Evaluate P-11 in your own devices

We supply evaluation quantities together with a specification sheet so your team can qualify the material under your own conditions.