Table 2. Device parameters of (FAPbI3)0.85(MAPbBr3)0.15-based dopant-free PVSCs using BTF1–4, spiro-OMeTAD and PEDOT:PSS as HTMs.
| HTMs | Device | V oc (V) | J sc (mA cm–2) | FF (%) | PCE (%) |
| BTF1 | n–i–p | 0.91(0.90 ± 0.01) | 17.5(16.2 ± 1.3) | 62.6(60.7 ± 1.8) | 9.97(8.84 ± 1.12) |
| BTF2 | n–i–p | 0.85(0.84 ± 0.02) | 19.5(18.0 ± 1.4) | 63.1(60.7 ± 2.1) | 10.45(9.16 ± 1.02) |
| BTF3 | n–i–p | 1.08(1.07 ± 0.02) | 20.4(19.2 ± 1.1) | 74.3(72.4 ± 1.8) | 16.34(15.28 ± 1.13) |
| BTF4 | n–i–p | 1.06(1.05 ± 0.01) | 22.5(21.5 ± 1.1) | 75.6(73.7 ± 1.9) | 18.03(16.97 ± 1.05) |
| Spiro-OMeTAD | n–i–p | 1.02(1.01 ± 0.01) | 14.3(13.0 ± 1.3) | 64.0(62.4 ± 1.5) | 9.33(8.21 ± 1.09) |
| BTF1 | p–i–n | 0.96(0.95 ± 0.01) | 16.1(14.9 ± 1.2) | 72.4(70.7 ± 1.5) | 11.19(10.02 ± 0.98) |
| BTF2 | p–i–n | 0.91(0.90 ± 0.02) | 17.7(16.5 ± 1.1) | 74.3(72.7 ± 1.6) | 11.96(10.51 ± 1.02) |
| BTF3 | p–i–n | 1.03(1.02 ± 0.01) | 19.3(18.3 ± 1.1) | 75.9(74.1 ± 1.7) | 15.09(14.14 ± 0.96) |
| BTF4 | p–i–n | 1.03(1.01 ± 0.02) | 21.5(20.5 ± 1.0) | 76.8(75.3 ± 1.5) | 17.01(16.14 ± 0.85) |
| PEDOT:PSS | p–i–n | 0.96(0.94 ± 0.01) | 22.4(21.5 ± 1.0) | 76.4(74.7 ± 1.6) | 16.42(15.48 ± 0.94) |