Boosting the Optoelectronic Properties of Molybdenum Diselenide by Combining Phase Transition Engineering with Organic Cationic Dye Doping
Source abstract
Abstract
Two-dimensional layered transition metal dichalcogenides (TMDs) have been investigated intensively as next-generation semiconducting materials. However, conventional TMD-based devices exhibit large contact resistance at the interface between the TMD and the metal electrode because of Fermi level pinning and the Schottky barrier, which results in poor charge injection. Here, we present enhanced charge transport characteristics in molybdenum diselenide (MoSe2) by means of a sequential engineering process called PESOD–2H/1T (i.e., phase transition engineering combined with surface transfer organic cationic dye doping; 2H and 1T represent the trigonal prismatic and octahedral phases, respectively). Substantial improvements are observed in PESOD-processed MoSe2 phototransistors, specifically, an approximately 40 000-fold increase in effective carrier mobility and a 100 000-fold increase in photoresponsivity, compared with the mobility and photoresponsivity of intact MoSe2 phototransistors. Moreover, the PESOD-processed MoSe2 phototransistor on a flexible substrate maintains its optoelectronic properties under tensile stress, with a bending radius of 5 mm.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: 2D Materials and Applications · Perovskite Materials and Applications · MXene and MAX Phase Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
MLCC Development Team, Samsung Electro-Mechanics, 150, Maeyeong-ro, Yeongtong-gu, Suwon, Gyeonggi-do 16674, Republic of Korea
Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk 37673, Republic of Korea
Department of Information Engineering, University of Brescia, Via Branze 38, 25123 Brescia, Italy
Electronic Engineering, Gachon University, 1342 Seongnam-daero, Seongnam 13120, Republic of Korea
Department of Energy Engineering Convergence & School of Materials Science and Engineering, Kumoh National Institute of Technology, Gumi, 39177, Republic of Korea
School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
Funding
National Research Foundation of Korea
References (78)
Show source-provided references
1. 10.1038/nnano.2013.10010.1038/nnano.2013.100 ↗
2. 10.1126/science.123554710.1126/science.1235547 ↗
3. 10.1002/adma.20150430910.1002/adma.201504309 ↗
4. 10.1126/science.125014010.1126/science.1250140 ↗
5. 10.1002/adma.20150512410.1002/adma.201505124 ↗
6. 10.1038/nnano.2013.20610.1038/nnano.2013.206 ↗
7. 10.1021/nl504256y10.1021/nl504256y ↗
8. 10.1021/nl201817810.1021/nl2018178 ↗
9. 10.1038/nnano.2010.27910.1038/nnano.2010.279 ↗
10. 10.1063/1.476821810.1063/1.4768218 ↗
11. 10.1021/nn203879f10.1021/nn203879f ↗
12. 10.1021/nl302584w10.1021/nl302584w ↗
13. 10.1109/TED.2011.215922110.1109/TED.2011.2159221 ↗
14. 10.1021/j100393a01010.1021/j100393a010 ↗
15. 10.1038/srep1531310.1038/srep15313 ↗
16. 10.1002/adma.20120190910.1002/adma.201201909 ↗
17. 10.1039/C3NR05965K10.1039/C3NR05965K ↗
18. 10.1021/nl500817g10.1021/nl500817g ↗
19. 10.1039/C5CS00151J10.1039/C5CS00151J ↗
20. 10.1021/acs.chemmater.5b0098610.1021/acs.chemmater.5b00986 ↗
21. 10.1002/adfm.20160348410.1002/adfm.201603484 ↗
22. 10.1021/ja807480g10.1021/ja807480g ↗
23. 10.1002/adfm.20150117010.1002/adfm.201501170 ↗
24. 10.1021/acsnano.5b0517310.1021/acsnano.5b05173 ↗
25. 10.1063/1.221937410.1063/1.2219374 ↗
26. 10.1063/1.158387210.1063/1.1583872 ↗
27. 10.1002/adfm.20030505310.1002/adfm.200305053 ↗
28. 10.1021/jp047861510.1021/jp0478615 ↗
29. 10.1021/ja103173m10.1021/ja103173m ↗
30. 10.1002/adma.20120509810.1002/adma.201205098 ↗
31. 10.1021/ja403906d10.1021/ja403906d ↗
32. 10.1039/C7CC04295G10.1039/C7CC04295G ↗
33. 10.1002/chem.20120259110.1002/chem.201202591 ↗
34. 10.1063/1.368976010.1063/1.3689760 ↗
35. 10.1063/1.491862710.1063/1.4918627 ↗
36. 10.1002/adma.20110323810.1002/adma.201103238 ↗
37. 10.1103/PhysRevLett.109.17660110.1103/PhysRevLett.109.176601 ↗
38. 10.1038/nmat502710.1038/nmat5027 ↗
39. 10.1039/C8TC02094A10.1039/C8TC02094A ↗
40. 10.1139/p83-01310.1139/p83-013 ↗
41. 10.1038/nchem.210810.1038/nchem.2108 ↗
42. 10.1021/nn501175k10.1021/nn501175k ↗
43. 10.1039/C4NR02311K10.1039/C4NR02311K ↗
44. 10.1021/nn503287m10.1021/nn503287m ↗
45. 10.1007/s10853-005-2104-710.1007/s10853-005-2104-7 ↗
46. 10.1021/nl201874w10.1021/nl201874w ↗
47. 10.1016/0039-6028(95)00544-710.1016/0039-6028(95)00544-7 ↗
48. 10.1016/j.electacta.2016.09.07610.1016/j.electacta.2016.09.076 ↗
49. 10.1038/s41557-018-0035-610.1038/s41557-018-0035-6 ↗
50. 10.1016/j.matchemphys.2018.11.06910.1016/j.matchemphys.2018.11.069 ↗
51. 10.1021/ja503332710.1021/ja5033327 ↗
52. 10.1103/PhysRevB.85.16140310.1103/PhysRevB.85.161403 ↗
53. 10.1038/srep0265710.1038/srep02657 ↗
54. 10.1126/sciadv.160006910.1126/sciadv.1600069 ↗
55. 10.1088/0953-8984/24/47/47550410.1088/0953-8984/24/47/475504 ↗
56. 10.1021/nn501150r10.1021/nn501150r ↗
57. 10.1063/1.491371410.1063/1.4913714 ↗
58. 10.1002/adma.20150227810.1002/adma.201502278 ↗
59. 10.1021/acsnano.5b0015310.1021/acsnano.5b00153 ↗
60. 10.1021/acs.nanolett.5b0506610.1021/acs.nanolett.5b05066 ↗
61. 10.1088/2053-1583/3/2/02100710.1088/2053-1583/3/2/021007 ↗
62. 10.1038/nmat445210.1038/nmat4452 ↗
63. 10.1063/1.486804210.1063/1.4868042 ↗
64. 10.1016/j.orgel.2012.04.02910.1016/j.orgel.2012.04.029 ↗
65. 10.1063/1.366970110.1063/1.3669701 ↗
66. 10.1109/TED.2011.215882510.1109/TED.2011.2158825 ↗
67. 10.1109/TED.2017.265375910.1109/TED.2017.2653759 ↗
68. 10.1038/ncomms1055010.1038/ncomms10550 ↗
69. 10.1021/nl502603d10.1021/nl502603d ↗
70. 10.1002/aelm.20170063910.1002/aelm.201700639 ↗
71. 10.1021/cm902531d10.1021/cm902531d ↗
72. 10.1021/ja901077a10.1021/ja901077a ↗
73. 10.1038/nnano.2012.19310.1038/nnano.2012.193 ↗
74. 10.1021/acsomega.6b0005810.1021/acsomega.6b00058 ↗
75. 10.1038/s41598-017-04224-410.1038/s41598-017-04224-4 ↗
76. 10.1038/ncomms249810.1038/ncomms2498 ↗
77. 10.1126/science.106484710.1126/science.1064847 ↗
78. 10.1038/nmat350510.1038/nmat3505 ↗