Bagaimanakah PAM-XIAMEN Mengembangkan Wafer Epitaxial LED GaN?

Bagaimanakah PAM-XIAMEN Mengembangkan Wafer Epitaxial LED GaN?

Gallium Nitride (GaN) ialah bahan asas LED biru dan mempunyai aplikasi penting dalam LED dan laser ultraungu.

PAM-XIAMEN boleh menanam wafer GaN secara epitaxial untuk LED dan LD. Untuk spesifikasi wafer lanjut sila layari:https://www.powerwaywafer.com/gan-wafer/epitaxial-wafer.html. Bagaimanakah kita mengembangkan epiwafer LED GaN pada nilam?

Sila klik pautanhttps://youtu.be/uu0tCdmAA10untuk menonton proses pertumbuhan wafer LED GaN daripada PAM-XIAMEN.

Teknologi epitaksi yang kami pakai ialah MOCVD.

Pertama, substrat tertakluk kepada rawatan suhu tinggi untuk membersihkan permukaan.

Kedua, tumbuhkan lapisan penampan kira-kira 20-30nm pada suhu rendah kerana ketidakpadanan besar antara nilam dan GaN.

Ketiga, tumbuhkan lapisan GaN jenis N dengan ketebalan kira-kira 4um terutamanya sebagai lapisan aktif, menyediakan elektron gabungan semula sinaran.

Kemudian, tumbuhkan satu set telaga kuantum berganda (MQW), yang komposisinya ditentukan oleh lapisan InGaN.

Laraskan komposisi indium dalam MQW untuk mencapai panjang gelombang yang anda inginkan.

Kecekapan penjanaan boleh dipertingkatkan dengan mengoptimumkan parameter MQW, seperti bilangan telaga, ketebalan berkala telaga molekul kumpulan bahan, dan kepekatan doping.

Selepas itu, tumbuhkan lapisan AlGaN jenis P. Komponen Al yang lebih tinggi boleh mengehadkan pembawa dan meningkatkan kecekapan bercahaya dengan ketara.

Akhir sekali, epilayer GaN jenis P ditanam untuk menyediakan elektron gabungan semula sinaran untuk MQW.

Selepas pertumbuhan epitaxial, penyepuhlindapan diperlukan untuk mengaktifkan lapisan P, menurunkan voltan.

 

Remark：
The Chinese government has announced new limits on the exportation of Gallium materials (such as GaAs, GaN, Ga2O3, GaP, InGaAs, and GaSb) and Germanium materials used to make semiconductor chips. Starting from August 1, 2023, exporting these materials is only allowed if we obtains a license from the Chinese Ministry of Commerce. Hope for your understanding and cooperation!

Untuk maklumat lanjut, sila hubungi kami e-mel divictorchan@powerwaywafer.com dan powerwaymaterial@gmail.com.

2023-04-26

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