Raman spectrum (cm−1)

HDX

DAP

GE

S1

S2

S3

S4

S5

S6

S7

S8

S9

S10

S11

S12

274

x

x

x

x

x

x

x

327

x

437

x

x

x

x

x

x

481

x

x

x

x

607

x

x

x

x

x

x

x

612

x

x

704

x

x

x

x

x

x

x

x

x

x

x

780

x

x

x

x

802

x

851

x

x

x

x

x

x

x

x

x

x

864

x

902

x

980

x

995

x

x

x

x

1030

x

x

1079

x

x

x

x

x

x

x

1245

x

1256

x

x

x

x

1263

x

x

1271

x

1294

x

x

x

x

1307

x

1342

x

1386

x

x