Table 1 Summary of CsPbCl0.9Br2.1 perovskite LEDs with different ratios of PEABr

From: Modulation of recombination zone position for quasi-two-dimensional blue perovskite light-emitting diodes with efficiency exceeding 5%

PEABr ratio

VT (V)

EL peak (nm)

Max. L. (cd m−2)

Max. CE (cd A−1)

Max. EQE (%)

FWHM (nm)

CIE

0%

3.5

487

177

0.07

0.05

20

(0.112,0.289)

40%

3.5

485

293

0.12

0.10

23

(0.105,0.254)

60%

3.3

484

892

0.52

0.46

21

(0.093,0.222)

80%

3.2

483

1278

1.43

1.25

21

(0.096,0.204)

100%

3.1

480

965

3.90

3.60

21

(0.101,0.155)

120%

3.3

478

304

2.69

2.88

24

(0.113,0.149)

  1. LED light-emitting diode, PEABr phenylethylammonium bromide, VT turn-on voltage, CE current efficiency, EQE external quantum efficiency, FWHM full-width at half-maximum, CIE Commission Internationale de l’Eclairage
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