Table 2 Physical parameters of the CQD layers obtained from various measurements
From: Energy level tuned indium arsenide colloidal quantum dot films for efficient photovoltaics
Materials | Majority carrier | Mobility (cm2 V−1 s−1) | Carrier concentration (cm−3) | Trap density (cm−3) | Diffusion length (nm) |
---|---|---|---|---|---|
InAs–Br | Electron | 1.55 × 10−3 (FET)b 1.34 × 10−3 (3D PL)c | 2.77 × 1016 (FET)a 4.65 × 1016 (C–V)d | 3.32 × 1017 (3D PL)c | 30 (3D PL)c |
InAs–MPA | Electron | 2.25 × 10−3 (FET)b 1.78 × 10−3 (3D PL)c | 1.28 × 1017 (FET)a 1.27 × 1017 (C–V)d | 1.24 × 1017 (3D PL)c | 60 (3D PL)c |
PbS–I | Holea | 2.74 × 10−3 (FET)a (air) | 8.11 × 1015 (FET)a | – | – |
5.30 × 1015 (C–V)d (InAs–Br) | – | – | |||
5.18 × 1015 (C–V)d (InAs–MPA) | – | – |