N-Bromosuccinimide as a p-type dopant for a Spiro-OMeTAD hole transport material to enhance the performance of perovskite solar cells

• Low costN-bromosuccinimide (NBS) was applied as an effective p-type dopant in 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9-spirobifluorene (Spiro-OMeTAD), an important hole transport material (HTM) for perovskite solar cells (PSCs). At the optimum doping concentration, the hole mobility, conductivity, stability, and various performances of the devices were significantly improved, particularly the hole mobility increased by more than 3.5 times from 1.39 × 10−4cm2V−1s−1to 4.92 × 10−4cm2V−1s−1. This dopant prompted the power conversion efficiency (PCE) of the PSC device from 16.12% to 19.24% (0.1 cm2, AM 1.5G, 100 mW cm−2) with high stability.

Ämnesord

NATURVETENSKAP  -- Kemi -- Materialkemi (hsv//swe)

NATURAL SCIENCES  -- Chemical Sciences -- Materials Chemistry (hsv//eng)

Nyckelord

Conversion efficiency

Hole mobility

Perovskite

Hole transport materials

N-bromosuccinimide

Optimum doping

P-type dopant

Power conversion efficiencies

Tetrakis

Perovskite solar cells

chemical compound

concentration (composition)

electronic equipment

energy efficiency

equipment

fuel cell

perforation

performance assessment

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