Article

Chai, Z, Freitas, P, Zhang, WD, Hatem, F, Degraeve, R, Clima, S, Zhang, J, Marsland, J, Fantini, A, Garbin, D, Goux, L and Kar, G (2020) Stochastic computing based on volatile GeSe ovonic threshold switching selectors. IEEE Electron Device Letters. ISSN 0741-3106

Chai, Z, Wei, S, Zhang, WD, Brown, J, Degraeve, R, Salim, F, Clima, S, Hatem, F, Zhang, JF, Freitas, P, Marsland, J, Fantini, A, Garbin, D, Goux, L and Kar, G (2019) GeSe-based Ovonic Threshold Switching Volatile True Random Number Generator. IEEE Electron Device Letters. ISSN 0741-3106

Chai, Z, Zhang, WD, Degraeve, R, Clima, S, Hatem, F, Zhang, JF, Freitas, P, Marsland, J, Fantini, A, Garbin, D, Goux, L and Kar, GS (2019) Dependence of switching probability on operation conditions in GexSe1-x ovonic threshold switching selectors. IEEE Electron Device Letters. ISSN 0741-3106

Chai, Z, Zhang, WD, Degraeve, R, Zhang, JF, Marsland, J, Fantini, A, Garbin, D, Clima, S, Goux, L and Kar, GS (2019) RTN in GexSe1-x OTS Selector Devices. Microelectronic Engineering, 215. ISSN 0167-9317

Ma, J, Chai, Z, Zhang, WD, Zhang, JF, Marsland, J, Govoreanu, B, Degraeve, R, Goux, L and Kar, G (2018) TDDB mechanism in a-Si/TiO2 non-filamentary RRAM device. IEEE Transactions on Electron Devices, 66 (1). pp. 777-784. ISSN 0018-9383

Chai, Z, Freitas, P, Zhang, WD, Hatem, F, Zhang, JF, Marsland, J, Govoreanu, B, Goux, L and Kar, GS (2018) Impact of RTN on Pattern Recognition Accuracy of RRAM-based Synaptic Neural Network. IEEE Electron Device Letters. ISSN 0741-3106

Chai, Z, Zhang, WD, Freitas, P, Hatem, F, Zhang, JF, Marsland, J, Govoreanu, B, Goux, L, Kar, GS, Hall, S, Chalker, P and Robertson, J (2018) The over-reset phenomenon in Ta2O5 RRAM device investigated by the RTN-based defect probing technique. IEEE Electron Device Letters, 39 (7). pp. 955-958. ISSN 0741-3106

Ma, J, Chai, Z, Zhang, WD, Zhang, JF, Ji, Z, Benbakhti, B, Govoreanu, B, Simoen, E, Goux, L, Belmonte, A, Degraeve, R, Kar, G and Jurczak, M (2018) Investigation of pre-existing and generated defects in non-filamentary a-Si/TiO2 RRAM and their impacts on RTN amplitude distribution. IEEE Transactions on Electron Devices, 65 (3). pp. 970-977. ISSN 0018-9383

Chai, Z, Ma, J, Zhang, WD, Govoreanu, B, Zhang, JF, Ji, Z and Jurczak, M (2017) Probing the Critical Region of Conductive Filament in Nanoscale HfO₂ Resistive-Switching Device by Random Telegraph Signals. IEEE Transactions on Electron Devices, 64 (10). pp. 4099-4105. ISSN 0018-9383

Joksas, D, Freitas, P, Chai, Z, Ng, WH, Buckwell, M, Li, C, Zhang, WD, Xia, QF, Kenyon, AJ and Mehonic, A Committee Machines—A Universal Method to Deal with Non-Idealities in Memristor-Based Neural Networks. Nature Communications. ISSN 2041-1723 (Accepted)

Chai, Z, Zhang, WD, Clima, S, Hatem, F, Degraeve, R, Diao, Q, Zhang, JF, Freitas, P, Marsland, J, Fantini, A, Garbin, D, Goux, L and Kar, G Cycling induced metastable degradation in GeSe Ovonic threshold switching selector. IEEE Electron Device Letters. ISSN 0741-3106 (Accepted)

Xue, F, He, X, Wang, Z, Retamal, JRD, Chai, Z, Lingling, J, Chenhui, Z, Fang, H, Chai, Y, Zhang, WD, Alshareef, H, Ji, Z, Li, L-J, He, J-H and Zhang, X Giant ferroelectric resistance switching controlled by a modulatory terminal for low-power neuromorphic in-memory computing. Advanced Materials. ISSN 0935-9648 (Accepted)

Conference or Workshop Item

Ma, J, Chai, Z, Zhang, WD, Govoneanu, B, Zhang, JF, Ji, Z, Benbakhti, B, Groeseneken, G and Jurczak, M (2017) Identify the critical regions and switching/failure mechanisms in non-filamentary RRAM (a-VMCO) by RTN and CVS techniques for memory window improvement. In: Technical Digest - International Electron Devices Meeting (2017). (IEEE International Electron Devices Meeting, 05 December 2016 - 07 December 2016, San Fransisco, USA).

Zhang, W, Chai, Z, Ma, J, Zhang, J and Ji, Z (2016) Analysis of RTN signals in Resistive-Switching RAM device and its correlation with device operations. In: 2016 13th IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT), 25 October 2016 - 28 October 2016, Hangzhou, China.

Chai, Z, Ma, J, Zhang, WD, Govoreanu, B, Simoen, E, Zhang, JF, Ji, Z, Gao, R, Groeseneken, G and Jurczak, M (2016) RTN-based defect tracking technique: experimentally probing the spatial and energy profile of the critical filament region and its correlation with HfO2 RRAM switching operation and failure mechanism. In: Digest of Technical Papers - Symposium on VLSI Technology (2016). (IEEE 2016 Symposia on VLSI Technology and Circuits, 13th-17th June 2016, Honolulu).

Zhang, WD, Chai, Z, Ma, J and Zhang, JF Analysis of switching, degradation and failure mechanisms by RTN signals in non-filamentary (a-VMCO) RRAM devices. In: ICSICT 2018, 31 October 2018 - 03 November 2018, Qingdao, China. (Accepted)

Hatem, F, Chai, Z, Zhang, WD, Fantini, A, Degraeve, R, Clima, S, Garbin, D, Robertson, J, Guo, Y, Zhang, JF, Marsland, J, Freitas, P, Goux, L and Kar, G Endurance improvement of more than five orders in GexSe1-x OTS selectors by using a novel refreshing program scheme. In: IEEE International Electron Device Meeting (IEDM), 09 December 2019 - 11 December 2019, San Francisco. (Accepted)

Chai, Z, Zhang, W, Degraeve, R, Clima, S, Hatem, F, Zhang, JF, Freitas, P, Marsland, J, Fantini, A, Garbin, D, Goux, L and Kar, G Evidence of filamentary switching and relaxation mechanisms in GexSe1-x OTS selectors. In: 2019 Symposia on VLSI Technology and Circuits, 10 June 2019 - 14 June 2019, Kyoto, Japan. (Accepted)

Freitas, P, Zhang, WD, Chai, Z, Zhang, JF and Marsland, J Impact of RTN and Variability on RRAM-Based Neural Network. In: IEEE 15th International Conference on Solid-State and Integrated-Circuit Technology, 03 November 2020 - 06 November 2020, Kunming, China. (Accepted)

Chai, Z, Freitas, P, Zhang, WD, Zhang, JF and Marsland, J True Random Number Generator Based on Switching Probability of Volatile Gexse1-X Ovonic Threshold Switching Selectors. In: 2021 IEEE 14th International Conference on ASIC, 26 October 2021 - 29 October 2021, Kunming, China. (Accepted)

Thesis

Chai, Z (2017) Characterisation of Novel Resistive Switching Memory Devices. Doctoral thesis, Liverpool John Moores University.