University of Groningen
Charge transport and trap states in lead sulfide quantum dot field-effect transistors
Nugraha, Mohamad Insan
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Publication date: 2017
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Nugraha, M. I. (2017). Charge transport and trap states in lead sulfide quantum dot field-effect transistors. University of Groningen.
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Acknowledgement
Alhamdulillah, all praises to Allah Subhanahu Wata’ala for the strengths, His guidance, and His blessings in completing this thesis.
A 4-year PhD is indeed a tough part of life, yet is very wonderful because of many amazing people surrounding. They have made my PhD life more colorful and full of happiness. From the deepest part of my heart, I would like to dedicate this thesis to them because of their support, motivation, and prayer during this 4-year long PhD journey.
First, I would like to send my gratitude to my supervisor, Prof. Maria Antonietta Loi, for her kind support, supervision, and guidance during my PhD. Maria, thank you for giving me an opportunity to study abroad and to join your lab, the place where I developed my knowledge and research experiences. Thank you for helping me with the paper writing, presentations, and some opportunities to attend international conferences. Thank you for providing me a great opportunity to have a collaboration in high quality research group at the University of Tokyo, Japan.
Second, I would like to sincerely acknowledge Prof. Jun Takeya at the University of Tokyo for giving me few years of life and research collaboration in Japan. The place where I have been dreaming of visiting since I was a kid. I really enjoyed living in Japan and learned a lot from the good Japanese culture in life and work activities. Thank you for sharing me your idea and for discussions during the collaboration. All of those as well as your typical Japanese pressure a bit are indeed very helpful to finish this PhD.
I would like to thank Prof. Justin Ye from University of Groningen, Prof. Cherie R. Kagan from University of Pennsylvania, and Prof. Matt Law from University of California Irvine for accepting to be the members of the reading committee for my PhD thesis.
I would like to specially thank Matsui-san, my great daily supervisor, for your patience in supervising me and arranging everything during my first visit in Japan. When I had a problem in research, you never blamed students. You always came up with solutions and brilliant ideas. You always have positive thoughts to students so that they can get highly motivated afterwards. Those what I can learn from you when I become a supervisor in the future. I cannot say anything but thank you very much for your valuable supports and kindness. Shun Watanabe, I also would like to express my gratitude to you for your supervision during few months of my last stay in Japan. Thank you for your great ideas and motivations. It is a great honor to be supervised by one of great material scientists like you.
Charge transport and trap states in PbS QD field-effect transistors
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During my research, I collaborated with many people. I would like to acknowledge Prof. Wolfgang Heiss and Dr. Mykhailo Sytnyk for providing quantum dot solutions; Prof. Chen and Prof. Wu for other side projects and fruitful discussions. This thesis would never have been completed without your valuable works and help.
A special acknowledgement goes to my both paranymphs: Wytse Talsma and Abdurrahman Ali. Thank you for accepting to be my paranymphs and preparing everything for my defense. Wytse, a funny Dutch friend and a good physicist with additional expertise in farming, we shared everything in the lab and you also had helped me a lot. Thank you also for translating the summary of my thesis into Dutch. Thanks for allowing me to have a picture with your beautiful horse and giving me a nice sunflower. Please let me know if you have a plan to visit Indonesia. Ali, we come from the same university in Indonesia and now we meet in Groningen. I hope we can have a strong research collaboration when we build a laboratory in Indonesia, in the future.
I would like to thank Renate Hekkema, our group secretary, for helping me with all paper and administrative works. I also would like to thank our research technicians: Arjen Kamp, Frans van der Horst, and Jan Harkema for your significant contribution to my research. Without your help, my research would never have run smoothly.
I would like to thank the members of photophysics and optoelectronics group at University of Groningen. Satria, thank you very much for giving me information about PhD position in Maria lab and supervision in Groningen. Widi, a friendly and nice Indonesian lab mate, thank you for everything and the discussion in the lab. We discussed everything including research, life, gadget, etc. Thank you also for your valuable inputs on the cover of my PhD thesis. Good luck with your postdoctoral research in RIKEN. It was great to meet you! Lai Hung, a funny Taiwanese and a food lover, I am really pleased to have met you in Groningen. I hope we can meet again somewhere and some time. I wish you the best in your careers. Musty, it was very fun to meet you, we frequently discussed about Indonesia and Nigeria. It was very surprising that you could spell some Indonesian words almost perfectly. Thank you also for your help in checking the English of my thesis. Nisrina, we met only in a short time but we discussed a lot. I am sure you can be a great person and I wish you a successful (love and) life. Furthermore, I would like to thank the other group members: Marianna, Sampson, Matthijs, Vlad, Jorge, Hong Hua, Shuyan, Artem, Mark, Daniel, and Simon. Thank you also for Jan Anton, Davide, Niels, Tejas, and Solmaz.
As part of my PhD research, I have a great chance to do research collaboration in organic electronics research group, the University of Tokyo, Japan. Therefore, I would like to thank the members of the group. Roger: it was my best luck to meet you in Tokyo because you provided me many great ideas and
111 did some successful simulation. Without your help, it is indeed very difficult for me to finish my thesis. I hope I can visit Switzerland some time. Yu Yamashita: thank you for discussion and sharing all about Japanese things. Fujishima: my very best Japanese friend, the most open-minded Japanese I have ever met. You have helped me a lot. I am really pleased to meet you and please let me know if you visit Indonesia. Hikari is asking about you. Thank you also for the other group members especially Kumagai, Balthasar, Sybille, Miyake, Kishi, Kubo, and Yamamura (I am so sorry I cannot mention all of other members here, but thank you very much for your hospitality and help).
I would have never been at this stage without genuine prayer and support from two greatest persons in my life, Mamah dan Bapak. Mamah, terima kasih
ya atas doa, motivasi, dan dukungannya selama ini. Terima kasih udah ngasih pendidikan yang sangat baik dari kecil sampai sekarang ini. Dengan ridho dan doa Mamah, alhamdulilah selesai juga PhD ini. Semoga ini bisa membuat Mamah bangga dan semoga Mamah selalu sehat, panjang umur, dan ikut merasakan kesuksesan selanjutnya. Bapak, mungkin Bapak ga baca tulisan ini. Tulisan ini untuk nunjukin betapa besar peran Bapak selama ini. Bapak, orang yang keras untuk masalah pendidikan khususnya pendidikan Agama. Bapak selalu ngajarin berprestasi di sekolah itu penting tapi tidak ada gunanya kalau meninggalkan sholat dan tidak bisa baca Alquran. Walau Bapak sekarang udah di sana, Bapak, selalu bisa membuat semangat dan termotivasi untuk menyelesaikan pendidikan ini. Semoga pencapaian ini bisa membuat Bapak bangga dan senyum di sana.
For my two beloved and beautiful angels: Prawistin and Ara. Bunda, terima
kasih ya atas doa dan cinta tulusnya selama ini. Makasih ya udah selalu sabar, selalu ada di samping, dan selalu kasih semangat pas lagi mumet riset dan nulis. Sering kasih masukan juga untuk paper dan tesis, untungnya riset kita sebidang ya. Mau lanjut PhD ga nih? :P Makasih juga ya udah ngasih semangat baru dan kado terbaik di akhir-akhir PhD, jadinya makin semangat ngerjain eksperimen dan nulis tesisnya. Mohon maaf selama ini belum jadi imam yang baik. Maafin juga ya selama PhD sering ditinggal sendirian malem-malem ke lab. :D Emang bener, dibalik suksesnya pria ada wanita hebat disampingnya. Ayo kita sukses selanjutnya! Abis dari Belanda dan Jepang, kemana lagi nih kita? Untuk Ara, ini dia nih kadonya dari Bunda. Makasih ya udah jadi spirit booster-nya Papah. Hadiahnya ikut jalan-jalan ke Belanda ya. Insya Allah Ara, Hikari Nazafarin Humaira, bisa jauh lebih baik dari Papah dan Bunda. Sehat, pinter, dan jadi anak sholihah ya.
Untuk keluarga besar di Tangerang: Teteh Leli, Teteh Rita, Aa Ari, Bang Boy, Om Fajar, Ka Ana, dan semua keluarga di Tangerang (maaf ga bisa disebut satu-satu). Terima kasih ya atas doa dan dukungannya. Mohon maaf selama merantau banyak ngerepotin. Makasih ya udah bantu jagain Mamah.
Charge transport and trap states in PbS QD field-effect transistors
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Jangan lupa doain terus untuk kesuksesan selanjutnya ya. Untuk Bapak dan Ibu di Semarang, terima kasih ya atas doa dan dukungannya untuk kelancaran pendidikan S3 dan selesainya tesis ini. Terima kasih juga udah nitipin Wistin, jadinya lebih semangat kuliah dan ngerjain tesisnya. Terima kasih juga atas bantuannya selama tinggal di Semarang dan jalan-jalannya juga. Terima kasih juga untuk Hanif, Mbah, semua keluarga Boyolali dan Sragen atas doa dan dukungannya selama hidup merantau.
My life in Groningen is unforgettable and I cannot forget to thank my Indonesian friends in Groningen: Om Pi’I, Mba Erlin, Idrus “Biber”, Mas Edy, Mas Zaky-Mba Sella, Pak Tatang-Bu Rohmah, Pak-Bu Asmoro, Pak Taufik-Mba Tina, Om Lutfi, Almas, Mas Doni, Guntur, Adhyat-Mba Nuri, Mas Didik-Mba Rosel, Mas Kus-Mba Fitri, Om Hegar, Mas Zainal-Mba Ayu, Mas Fean, Om Fikri, Radit-Nia, Didin, Mba Susan-Mas Bino, Mas Yusuf, Salma, Shiddiq, Cacha, Mbak Adel, Mas Bintoro, Mba Shofi, Mba Tiur, Mba Nur, Mas Azis-Amalina, grup sandwich ITB-Groningen (Felix, Ali, Liany, Ulfa, Reren, Anis, Resti, Raisa, Mamay), Mas Krisna-Mba Icha, temen-temen deGromiest and PPI Groningen that are not mentioned here. Being far away from family is not a big problem, because I have met all of you. Thank you for making my life in Groningen more colorful and full of happiness.
Some parts of my PhD life were done in Japan. Therefore, I would not forget to give special thanks to my Indonesian friends in Tokyo, Japan especially Windy, Ronald, Mbak Ety, Helbert, Mbak Ambar, Mbak Dian, Ikhlas, and Mas Ardhi. It is well-known that living in Japan as researcher/student is full of pressure, especially in Kashiwa where almost nothing around. But, it is not a big problem when I meet all of you. I hope we can meet again in Tokyo and Indonesia, in the future. See you on top.
I also would like to thank Anggita Putri Wibowo (Ghe) for your valuable time in discussing and giving some initial ideas about the cover of my PhD thesis. I wish you the best in your career and life.
For my best friends in Tangerang: Candra, Indra, Muklis, Avan, Boby, Tyo, Adit, Budi, Alin, dan yang lainnya. Terima kasih ya atas doa dan sharingnya
selama ini. Terima kasih juga udah mengisi hari-hari nulis tesis ini sambil diskusi Bahasa Inggris dan kerja bakti. Kapok ga? :P
I also would like to acknowledge all of my teachers and supervisors during my study especially my lecturers and supervisors in Department of Physics, Institut Teknologi Bandung (ITB): Pak Yudi, Pak Ferry, Pak Mikra, and Bu Inge. Last but not least, also for my great teachers in SMA Negeri 7 Tangerang. Thank you for your great support, contribution, and prayer during my study which brought me at this stage.
