PMID- 30855970 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20201001 IS - 1530-6992 (Electronic) IS - 1530-6984 (Linking) VI - 19 IP - 4 DP - 2019 Apr 10 TI - Impact of Organic Molecule-Induced Charge Transfer on Operating Voltage Control of Both n-MoS(2) and p-MoTe(2) Transistors. PG - 2456-2463 LID - 10.1021/acs.nanolett.9b00019 [doi] AB - Since transition metal dichalcogenide (TMD) semiconductors are found as two-dimensional van der Waals materials with a discrete energy bandgap, many TMD based field effect transistors (FETs) are reported as prototype devices. However, overall reports indicate that threshold voltage ( V(th)) of those FETs are located far away from 0 V whether the channel is p- or n-type. This definitely causes high switching voltage and unintended OFF-state leakage current. Here, a facile way to simultaneously modulate the V(th) of both p- and n-channel FETs with TMDs is reported. The deposition of various organic small molecules on the channel results in charge transfer between the organic molecule and TMD channels. Especially, HAT-CN molecule is found to ideally work for both p- and n-channels, shifting their V(th) toward 0 V concurrently. As a proof of concept, a complementary metal oxide semiconductor (CMOS) inverter with p-MoTe(2) and n-MoS(2) channels shows superior voltage gain and minimal power consumption after HAT-CN deposition, compared to its initial performance. When the same TMD FETs of the CMOS structure are integrated into an OLED pixel circuit for ambipolar switching, the circuit with HAT-CN film demonstrates complete ON/OFF switching of OLED pixel, which was not switched off without HAT-CN. FAU - Cho, Yongjae AU - Cho Y AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. FAU - Park, Ji Hoon AU - Park JH AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. FAU - Kim, Minju AU - Kim M AUID- ORCID: 0000-0002-7466-7129 AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. FAU - Jeong, Yeonsu AU - Jeong Y AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. FAU - Yu, Sanghyuck AU - Yu S AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. FAU - Lim, June Yeong AU - Lim JY AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. FAU - Yi, Yeonjin AU - Yi Y AUID- ORCID: 0000-0003-4944-8319 AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. FAU - Im, Seongil AU - Im S AUID- ORCID: 0000-0003-0723-5075 AD - Van der Waals Materials Research Center, Department of Physics and Applied Physics , Yonsei University , 50 Yonsei-ro , Seodaemun-gu , Seoul 03722 , Korea. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190313 PL - United States TA - Nano Lett JT - Nano letters JID - 101088070 OTO - NOTNLM OT - HAT-CN OT - TMD OT - charge transfer OT - organic molecules OT - threshold voltage EDAT- 2019/03/12 06:00 MHDA- 2019/03/12 06:01 CRDT- 2019/03/12 06:00 PHST- 2019/03/12 06:00 [pubmed] PHST- 2019/03/12 06:01 [medline] PHST- 2019/03/12 06:00 [entrez] AID - 10.1021/acs.nanolett.9b00019 [doi] PST - ppublish SO - Nano Lett. 2019 Apr 10;19(4):2456-2463. doi: 10.1021/acs.nanolett.9b00019. Epub 2019 Mar 13.